Medieval Welsh Name Generator
Period names from the princes to Glyndŵr
Generate medieval Welsh names as they were used between about 1066 and 1500: a given name, a patronymic with ap, ab or ferch, and often an epithet. Recorded princes, noblewomen and poets such as Llywelyn ab Iorwerth, Gwladus Ddu and Iolo Goch sit beside period-form names like Tangwystl ferch Cadwgan and Heilyn Goch ab Einion.
About medieval Welsh names
Medieval Wales had no fixed surnames. A person was known by a given name and a father's name: ap before a consonant and ab before a vowel for a son (Rhys ap Tewdwr, Llywelyn ab Iorwerth), ferch for a daughter (Gwenllian ferch Gruffudd). The chain could run back two or more generations, as in Dafydd ab Ieuan ab Einion, and a married woman kept her own patronymic.
Because a small stock of given names did most of the work, epithets told people apart. They follow the name and are usually written with a soft mutation: Goch (red), Llwyd (grey), Ddu (black), Fychan (the younger or smaller), Hir (tall), Gam (crooked, often of a squint), Gryg (hoarse) and Sais (the Englishman, often a Welshman who spoke English). Places work the same way, as in Owain Cyfeiliog and Tudur Penllyn.
The 1,000 names cover about 1066 to 1500 and mix two kinds of entry. Some are people on record: princes of Gwynedd, Powys and Deheubarth, court and gentry poets, clergy and jurists. The rest are period forms built from attested given names, patronymics and epithets, and are not claimed as recorded individuals. Spelling follows one modern convention throughout (Gruffudd, Maredudd, Cynwrig), and late entries such as Deio ap Hopcyn or Tomas Fychan show names sliding toward the surnames that came after.
How to choose medieval Welsh names
- Pick the century before the name. Gwrgenau, Rhiwallon, Seisyll and Hunydd suit the eleventh and twelfth centuries; Deio, Siencyn, Hopcyn, Lowri and Catrin belong to the fourteenth and fifteenth, when pet forms and borrowed names in Welsh spelling became common.
- Use ab, not ap, when the father's name starts with a vowel: ab Owain, ab Einion, ab Ithel. This list also writes ab before Ieuan and Iorwerth, the form many modern historians use, though you will meet Llywelyn ap Iorwerth in other books.
- Give a daughter ferch plus her father's name and leave it unchanged on marriage. Angharad ferch Owain stays Angharad ferch Owain whoever she marries.
- Add an epithet when two characters share a name. Records tell such pairs apart as Fychan (the younger), Hen (the old), Goch, Ddu or Llwyd, and a father's epithet often travels with him, as in Maredudd ap Rhys Gryg.
- For a charter, a boast or a bard's praise, run the pedigree back a generation: Cadwgan ap Madog ab Einion. In everyday speech the same man is plain Cadwgan.
Frequently asked questions
How did medieval Welsh names work?
Most people had a given name followed by their father's name, joined by ap or ab (son of) or ferch (daughter of). Llywelyn ap Gruffudd is Llywelyn son of Gruffudd, and Gwenllian ferch Llywelyn is the daughter of a Llywelyn. There was no family surname to inherit, so each generation's second name was different.
What do the epithets after a name mean?
They are nicknames for looks, age or habit that set apart people with the same name. Goch is red-haired, Ddu dark, Llwyd grey, Hir tall, Fychan the younger or smaller, Foel bald and Sais the Englishman. In the list you will find them on recorded people such as Rhys Gryg and Gwladus Ddu and on built names such as Heilyn Goch ab Einion.
Are these real historical people?
Some are. The list includes well-known figures of the period such as Owain Gwynedd, Ednyfed Fychan, Dafydd ap Gwilym and Gwerful Mechain. Many other entries are period forms put together from attested given names, patronymics and epithets. The list does not mark which is which, so do not treat an entry as proof that a person existed.
When did Welsh patronymics turn into surnames?
Gradually, from the fifteenth century onward and faster after the union with England in the sixteenth, as families fixed a father's name or an epithet as a surname. Ap Hywel became Powell, ab Owain became Bowen, Fychan became Vaughan and Llwyd became Lloyd. Late entries here such as Tomas Fychan and Siôn Llwyd sit on that edge, still in their Welsh form.
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All 1,000 medieval Welsh names
A: 54 names
- Adda
- Adda ab Iocyn ab Awr
- Adda ap Llywelyn ap Trahaearn
- Adda Foel
- Adda Fras
- Adda Goch ab Ieuaf
- Adda o Fochnant
- Adda Offeiriad
- Alys Fechan
- Alys ferch Gruffudd ap Deio
- Alys ferch Gwilym
- Alys ferch Hopcyn
- Alys ferch Owain
- Alys ferch Rhobert
- Alys Goch ferch Phylip
- Anarawd
- Anarawd ab Einion
- Angharad
- Angharad ferch Ednyfed
- Angharad ferch Elise
- Angharad ferch Gwrgenau
- Angharad ferch Gwyn ap Carwed
- Angharad ferch Hwlcyn
- Angharad ferch Llywelyn
- Angharad ferch Madog
- Angharad ferch Owain
- Angharad ferch Rhiwallon
A, continued
- Angharad ferch Trahaearn ap Meurig
- Angharad Fychan
- Angharad Goch
- Angharad Hir
- Angharad o Fôn
- Anian
- Annes
- Annes ferch Gwilym Fychan
- Annes ferch Huw
- Annes ferch Hywel
- Annes ferch Ithel
- Annes ferch Phylip
- Annes ferch Rhys ap Gwallter
- Annes Goch ferch Tegwared
- Annes Llwyd
- Annest
- Annest Ddu
- Annest ferch Cadwallon
- Annest ferch Gruffudd
- Annest ferch Idnerth
- Annest ferch Meurig Llwyd
- Annest ferch Seisyll ap Dyfnwal
- Aron
- Aron ab Ednyfed
- Aron ap Daniel ap Dyfnwal
- Awr
- Awr ab Ieuaf
B: 15 names
- Bedo
- Bedo Aeddren
- Bedo ap Hwlcyn
- Bedo Brwynllys
- Bedo Hir
- Bedo Phylip Bach
- Bleddyn ab Ithel ab Iorwerth
- Bleddyn ap Cynfyn
- Bleddyn Fardd
- Bleddyn Feddyg
- Bleddyn Llwyd ap Bleddyn
- Bledri
- Bledri ap Cedifor
- Bledri ap Collwyn ap Tangno
- Bleiddudd
C: 66 names
- Cadell ap Tewdwr ap Rhydderch
- Cadwaladr ap Gruffudd
- Cadwallon
- Cadwallon o Faelienydd
- Cadwgan
- Cadwgan ap Bleddyn
- Cadwgan ap Madog ab Einion
- Cadwgan Chwith
- Cadwgan Ddu ap Tegwared
- Cadwgan o Landyfai
- Caradog ab Iestyn
- Caradog ap Rhiwallon ap Gwyn
- Caradog Fawr
- Caradog o Gaerllion
- Carwed
- Carwed ab Iddon ap Gwion
- Carwed ap Gwyn
- Carwed ap Hwfa ap Tegwared
- Carwed o Ros
- Carwed Wyn
- Casnodyn
- Catrin Ddu
- Catrin ferch Gutun
- Catrin ferch Hopcyn
- Catrin ferch Maredudd
- Catrin ferch Owain
- Catrin ferch Rheinallt ap Lewys
- Catrin o Sycharth
- Cedifor
- Cedifor ap Collwyn
- Cedifor ap Griffri
- Cnepyn Gwerthrynion
- Collwyn
C, continued
- Collwyn ap Gwion
- Crach Ffinnant
- Cristin
- Cristin Fechan ferch Seisyll
- Cristin ferch Bleddyn
- Cristin ferch Bleddyn ab Ithel
- Cristin ferch Einion Sais
- Cristin ferch Goronwy
- Cristin ferch Gwallter
- Cristin Goch
- Cuhelyn
- Cuhelyn ap Rhirid
- Cuhelyn Ddu
- Cuhelyn Fardd
- Cyfnerth
- Cyfnerth ap Morgeneu
- Cyfnerth ap Morgeneu ab Iarddur
- Cynan Wyn
- Cynddelw Brydydd Mawr
- Cynfelyn
- Cynfelyn ap Gwrgenau ap Gwyn
- Cynfyn
- Cynfyn ap Gwrgant
- Cynfyn ap Gwrgant ap Bleiddudd
- Cynwrig
- Cynwrig ab Ednyfed ap Carwed
- Cynwrig ap Meurig ab Idnerth
- Cynwrig Efell
- Cynwrig Fychan ap Cynwrig
- Cynwrig Hir
- Cynwrig Offeiriad
- Cynwrig Sais
- Cynyr ap Cadwgan
D: 52 names
- Dafydd ab Edmwnd
- Dafydd ab Ednyfed Gam
- Dafydd ab Ieuan ab Einion
- Dafydd ab Owain Gwynedd
- Dafydd ap Deicws
- Dafydd ap Gruffudd
- Dafydd ap Guto
- Dafydd ap Gwilym
- Dafydd ap Llywelyn
- Dafydd Bach ap Madog Wladaidd
- Dafydd Benfras
- Dafydd Ddall
- Dafydd Ddu o Hiraddug
- Dafydd Epynt
- Dafydd Feddyg
- Dafydd Gam
- Dafydd Gorlech
- Dafydd Llwyd ap Llywelyn
- Dafydd Llwyd o Fathafarn
- Dafydd Nanmor
- Dafydd Trefor
- Dafydd y Coed
- Daniel ap Cedifor
- Daniel ap Llosgwrn Mew
- Daniel ap Sulien
- Deicws
D, continued
- Deicws ab Iolyn
- Deicws ab Iolyn ap Carwed
- Deicws ap Madog
- Deicws Ddu
- Deicws Gam
- Deio
- Deio ab Ieuan Du
- Deio ap Hopcyn
- Deio Bach
- Deio Gethin
- Deio o Geri
- Dyddgu
- Dyddgu Ddu
- Dyddgu Fechan ferch Cynwrig
- Dyddgu ferch Carwed
- Dyddgu ferch Deicws
- Dyddgu ferch Einion ap Griffri
- Dyddgu ferch Einion Hir
- Dyddgu ferch Griffri ap Goronwy
- Dyddgu ferch Gwion
- Dyddgu ferch Ieuan
- Dyddgu ferch Lleision
- Dyddgu Llwyd
- Dyddgu o Geredigion
- Dyfnwal
- Dyfnwal ap Caradog
E: 61 names
- Ednowain
- Ednowain ap Bleddyn
- Ednowain ap Bradwen
- Ednowain Bendew
- Ednyfed
- Ednyfed ap Goronwy ap Meurig
- Ednyfed Fychan
- Ednyfed Gam
- Edwart ap Dafydd
- Efa ferch Collwyn
- Efa ferch Cuhelyn
- Efa ferch Gwion ap Cedifor
- Efa ferch Iorwerth ab Ithel
- Efa ferch Llelo
- Efa ferch Meurig ab Adda
- Efa ferch Selyf
- Efa Fychan
- Efa Goch ferch Iorwerth
- Efa Llwyd
- Efa o Gyfeiliog
- Einion ap Gwalchmai
- Einion ap Gwgon
- Einion ap Madog ap Rhahawd
- Einion ap Seisyll ab Ednowain
- Einion Athro
- Einion Clud
- Einion Efell
- Einion Fychan
- Einion Gloff
- Einion Goch ap Heilyn
E, continued
- Einion Gryg
- Einion Lygliw
- Einion o'r Porth
- Einion Offeiriad
- Einion Sais
- Einion Wan
- Elen Ddu ferch Cadwgan
- Elen ferch Caradog
- Elen ferch Iestyn
- Elen ferch Lewys
- Elen ferch Tomas
- Elen Gethin
- Elen Llwyd
- Elidir ap Gwalchmai
- Elidir ap Rhys Sais
- Elidir Sais
- Elise
- Elise ap Cynwrig
- Elise Foel
- Ellyw
- Ellyw ferch Gruffudd
- Ellyw ferch Iorwerth
- Ellyw ferch Maredudd
- Ellyw ferch Maredudd ap Rhys
- Ellyw Goch
- Elsbeth
- Elsbeth ferch Siôn
- Elsbeth ferch Tomas
- Elsbeth ferch Wiliam ap Siôn
- Eunydd
- Eunydd ap Morgeneu
G: 161 names
- Generys
- Generys Ddu
- Generys ferch Cynan
- Generys ferch Heilyn
- Generys ferch Iorwerth ap Cynwrig
- Generys ferch Iorwerth Ddu
- Generys ferch Llywarch ap Heilyn
- Generys ferch Madog
- Generys Goch ferch Meurig
- Generys o Benllyn
- Generys Wen
- Goleuddydd
- Goleuddydd ferch Dafydd
- Goleuddydd ferch Hywel
- Goleuddydd ferch Meurig
- Goleuddydd Llwyd
- Goronwy
- Goronwy ab Ednyfed
- Goronwy ab Ithel ap Bleddyn
- Goronwy ap Heilyn
- Goronwy ap Moriddig
- Goronwy Foel
- Goronwy Gyriog
- Goronwy Llwyd ap Tudur
- Goronwy Ynad
- Griffri
- Griffri ab Iorwerth ap Meilyr
- Griffri ap Seisyll
- Griffri Hen
- Griffri o Ardudwy
- Gruffudd ab yr Ynad Coch
- Gruffudd ap Cynan
G, continued
- Gruffudd ap Dafydd ap Tudur
- Gruffudd ap Dafydd Goch
- Gruffudd ap Gwenwynwyn
- Gruffudd ap Llywelyn
- Gruffudd ap Llywelyn Fychan
- Gruffudd ap Maredudd ap Dafydd
- Gruffudd ap Nicolas
- Gruffudd ap Rhys
- Gruffudd Benwyn
- Gruffudd Bola
- Gruffudd Derwas
- Gruffudd Fychan
- Gruffudd Gryg
- Gruffudd Iâl
- Gruffudd Leiaf
- Gruffudd Llwyd
- Gruffudd Maelor
- Gruffudd o'r Rhuddallt
- Guto ap Siencyn
- Guto ap Tudur
- Guto Fychan ap Siencyn
- Guto o Hergest
- Guto Wyn
- Guto'r Glyn
- Gutun
- Gutun ap Bedo ap Deio
- Gutun ap Deicws
- Gutun ap Madyn
- Gutun Goch
- Gutun Owain
- Gwalchmai ap Meilyr
- Gwallter
G, continued
- Gwallter ap Lleision
- Gwallter ap Phylip ap Lleision
- Gwallter Llwyd
- Gweirydd
- Gweirydd ab Eunydd ab Ednowain
- Gweirydd ap Carwed
- Gweirydd ap Rhys Goch
- Gwen Ddu ferch Carwed
- Gwen Fechan
- Gwen ferch Deio
- Gwen ferch Heilyn
- Gwen ferch Iolyn ap Bedo
- Gwenhwyfar Fechan ferch Adda
- Gwenhwyfar ferch Dafydd ap Cynwrig
- Gwenhwyfar ferch Goronwy
- Gwenhwyfar ferch Heilyn Goch
- Gwenhwyfar ferch Ieuan
- Gwenhwyfar ferch Ithel
- Gwenhwyfar ferch Madog ab Iorwerth
- Gwenhwyfar Goch
- Gwenllian Ddu
- Gwenllian ferch Bleiddudd
- Gwenllian ferch Cuhelyn ap Seisyll
- Gwenllian ferch Deio
- Gwenllian ferch Ednyfed
- Gwenllian ferch Einion ap Cadwgan
- Gwenllian ferch Gruffudd
- Gwenllian ferch Hywel ap Tudur
- Gwenllian ferch Llywelyn
- Gwenllian ferch Madog
- Gwenllian ferch Maelgwn
- Gwenllian ferch Owain
G, continued
- Gwenllian ferch Rhirid Flaidd
- Gwenllian ferch Rhys
- Gwenllian Fychan
- Gwenllian Hir
- Gwenllian o Ddinefwr
- Gwenwynwyn
- Gwenwynwyn ab Owain
- Gwerful ferch Awr
- Gwerful ferch Cynwrig ap Rhirid
- Gwerful ferch Ednyfed ap Cuhelyn
- Gwerful ferch Guto
- Gwerful ferch Hywel Fychan
- Gwerful ferch Madog Foel
- Gwerful ferch Trahaearn
- Gwerful Fychan
- Gwerful Goch
- Gwerful Mechain
- Gwerful o Edeirnion
- Gwerful Wen ferch Ithel
- Gwgon
- Gwgon ab Iddon ap Seisyll
- Gwgon ap Meilyr
- Gwgon Sais
- Gwilym ab Ieuan Hen
- Gwilym ap Phylip ap Gwallter
- Gwilym ap Tudur
- Gwilym ap Watcyn
- Gwilym Ddu o Arfon
- Gwilym Foel
- Gwilym Gam
- Gwilym Hael
- Gwilym Llwyd ap Phylip
G, continued
- Gwilym o Gemais
- Gwilym o'r Penrhyn
- Gwilym Ryfel
- Gwilym Tew
- Gwion ab Awr ab Ieuaf
- Gwion ap Hwfa
- Gwion ap Trahaearn ap Griffri
- Gwladus
- Gwladus Ddu
- Gwladus ferch Cynwrig
- Gwladus ferch Dafydd Gam
- Gwladus ferch Einion
- Gwladus ferch Goronwy ab Ednyfed
- Gwladus ferch Llywarch
- Gwladus ferch Morgan
- Gwladus ferch Morgan Gam
- Gwladus ferch Rhiwallon
- Gwladus ferch Rhiwallon ap Tewdwr
- Gwladus ferch Uchdryd
- Gwladus Gam
- Gwladus o Frycheiniog
- Gwladus Wen
- Gwrgant
- Gwrgenau
- Gwrgenau ap Madog
- Gwrgenau ap Seisyll
- Gwrwared
- Gwrwared ap Cuhelyn
- Gwrwared o Ddyfed
- Gwyn ab Ednyfed
- Gwyn Gethin
- Gwyn o Fechain
- Gwynfardd Brycheiniog
H: 75 names
- Harri ap Gwilym
- Harri ap Siôn ap Wiliam
- Harri Dwn
- Harri Wyn
- Hawys Ddu
- Hawys ferch Cadell
- Hawys ferch Ednyfed
- Hawys ferch Gruffudd ap Gwenwynwyn
- Hawys ferch Gwallter
- Hawys ferch Owain Fychan
- Hawys Gadarn
- Hawys o'r Trallwng
- Hawys Wen ferch Owain
- Hedd Molwynog
- Heilyn
- Heilyn ab Iorwerth ap Cynwrig
- Heilyn Goch ab Einion
- Heilyn Offeiriad
- Hillyn
- Hopcyn ap Gwilym ap Lleision
- Hopcyn ap Tomas
- Hopcyn Ddu
- Hopcyn Gam
- Hopcyn o Ŵyr
- Hunydd
- Hunydd Ddu ferch Heilyn
- Hunydd Fechan
- Hunydd ferch Adda ab Iocyn
- Hunydd ferch Cynwrig
- Hunydd ferch Cynwrig Goch
- Hunydd ferch Eunydd
- Hunydd ferch Goronwy
- Hunydd ferch Iddon
- Hunydd ferch Ithel ap Heilyn
- Hunydd Goch
- Hunydd o Degeingl
- Huw ap Harri
H, continued
- Huw ap Rheinallt
- Huw ap Rhobert ab Iocyn
- Huw Cae Llwyd
- Huw Gethin
- Huw o'r Waun
- Huw Pennant
- Hwfa
- Hwfa ab Ithel
- Hwfa ap Cynddelw
- Hwfa ap Rhirid ab Iddon
- Hwfa o Aberffraw
- Hwlcyn
- Hwlcyn ab Ieuan
- Hwlcyn ap Hywel
- Hwlcyn Fychan
- Hwlcyn Llwyd
- Hywel ab Ednyfed
- Hywel ab Einion Lygliw
- Hywel ab Ieuaf
- Hywel ab Ieuan Fychan
- Hywel ab Iorwerth
- Hywel ab Owain Gwynedd
- Hywel ap Gutun
- Hywel ap Meurig Fychan
- Hywel Cilan
- Hywel Coetmor
- Hywel Dafi
- Hywel Felyn
- Hywel Foel
- Hywel Foel ap Griffri
- Hywel Fychan ap Hywel Goch
- Hywel Gethin
- Hywel Rheinallt
- Hywel Sais
- Hywel Sele
- Hywel Swrdwal
- Hywel y Fwyall
- Hywel Ystorm
I: 81 names
- Iago
- Iago ap Gwgon
- Iago Felyn
- Iarddur
- Iarddur ap Cynddelw
- Iarddur ap Cynfelyn ap Sandde
- Iddon
- Iddon ab Iorwerth
- Iddon Felyn
- Iddon Ynad
- Idnerth
- Idnerth ap Meurig
- Iestyn ap Gwrgant
- Iestyn ap Rhydderch
- Ieuaf
- Ieuaf ab Awr ab Idnerth
- Ieuaf ap Carwed
- Ieuan ap Gruffudd Leiaf
- Ieuan ap Huw Cae Llwyd
- Ieuan ap Hwlcyn
- Ieuan ap Hywel Swrdwal
- Ieuan ap Llywelyn Fychan
- Ieuan ap Rhydderch
- Ieuan ap Siôn
- Ieuan ap Sulien
- Ieuan ap Tudur Penllyn
- Ieuan Brydydd Hir
I, continued
- Ieuan Deulwyn
- Ieuan Du'r Bilwg
- Ieuan Dyfi
- Ieuan Feddyg
- Ieuan Fychan ab Ieuan ab Adda
- Ieuan Gethin
- Ieuan Gethin ab Ieuan
- Ieuan Gyfannedd
- Ieuan Llwyd
- Ieuan Llwyd ab y Gargam
- Ieuan Rudd
- Ieuan Tew
- Ieuan Trefor
- Ieuan Waed Da
- Ifor ap Morgan ap Caradog
- Ifor Bach
- Ifor Gethin
- Ifor Hael
- Ifor o Senghennydd
- Iocyn
- Iocyn ab Einion ab Ithel
- Iocyn ap Heilyn
- Iocyn ap Madog
- Iocyn Ddu ab Ithel Grach
- Iocyn o Nant Conwy
- Iolo Goch
- Iolyn
I, continued
- Iolyn ap Dafydd
- Iolyn ap Deio
- Iolyn ap Goronwy
- Iolyn Llwyd
- Iolyn Tew
- Iorwerth ab y Cyriog
- Iorwerth ap Griffri ap Heilyn
- Iorwerth ap Madog
- Iorwerth Beli
- Iorwerth Ddu
- Iorwerth Drwyndwn
- Iorwerth Foel
- Iorwerth Fychan ab Iorwerth
- Iorwerth Fynglwyd
- Iorwerth Goch
- Ithel ap Cynwrig ap Bleddyn
- Ithel Felyn
- Ithel Fychan
- Ithel Grach
- Ithel Llwyd ab Ithel
- Ithel Offeiriad
- Ithel Wyddel
- Ithel Ynad
- Iwerydd
- Iwerydd ferch Bleddyn
- Iwerydd ferch Cynfyn
- Iwerydd ferch Moriddig ap Sandde
L: 58 names
- Lewys
- Lewys ap Rhisiart
- Lewys ap Watcyn
- Lewys Gethin
- Lewys Glyn Cothi
- Lewys Môn
- Llawdden
- Lleision
- Lleision ab Ifor
- Lleision ap Caradog ab Ifor
- Lleision o Afan
- Llelo
- Llelo ap Cynwrig
- Llelo ap Madyn ap Hwlcyn
- Llelo Gethin
- Lleucu Fechan
- Lleucu ferch Bedo
- Lleucu ferch Deicws ap Madyn
- Lleucu ferch Hwfa ap Tegwared
- Lleucu ferch Ieuaf
- Lleucu ferch Ieuan Llwyd
- Lleucu ferch Tegwared
- Lleucu Goch ferch Tudur
- Lleucu Hir
- Lleucu Llwyd
- Lleucu o Bennal
- Llygad Gŵr
- Llywarch ab Iddon
- Llywarch ap Brân
L, continued
- Llywarch ap Heilyn ap Tegwared
- Llywarch ap Trahaearn
- Llywarch Llaety
- Llywarch o Arwystli
- Llywelyn ab Iorwerth
- Llywelyn ab y Moel
- Llywelyn ap Gruffudd
- Llywelyn ap Gruffudd Fychan
- Llywelyn ap Madog ab Elis
- Llywelyn Bren
- Llywelyn Brydydd Hoddnant
- Llywelyn Ddu ap Cadwgan
- Llywelyn Fardd
- Llywelyn Fawr
- Llywelyn Foethus
- Llywelyn Fychan
- Llywelyn Goch ap Meurig Hen
- Llywelyn Goch y Dant
- Llywelyn Gryg
- Llywelyn Sais ab Ednyfed
- Lowri Fechan ferch Maredudd
- Lowri ferch Gruffudd Fychan
- Lowri ferch Hywel
- Lowri ferch Maredudd Fychan
- Lowri ferch Morus ap Harri
- Lowri ferch Rhisiart
- Lowri ferch Tudur
- Lowri Goch
- Lowri o Nannau
M: 137 names
- Mab y Clochyddyn
- Mabli Ddu
- Mabli ferch Lewys Gethin
- Mabli ferch Lleision
- Mabli ferch Morgan ap Lleision
- Mabli ferch Watcyn
- Mabli Wen ferch Lleision
- Madog ab Uchdryd
- Madog ap Gruffudd Maelor
- Madog ap Gwallter
- Madog ap Llywelyn
- Madog ap Maredudd
- Madog ap Selyf
- Madog Athro
- Madog Benfras
- Madog Benwyn
- Madog Cyffin
- Madog Dwygraig
- Madog Fychan
- Madog Goch Ynad
- Madog Llwyd ab Iorwerth
- Madyn
- Madyn ab Iocyn
- Madyn ap Llelo
- Madyn Goch
- Madyn Hir
- Madyn o Lŷn
- Maelgwn ab Owain Gwynedd
- Maelgwn ap Cadwallon
- Maelgwn ap Rhys
- Maelgwn ap Rhys Fychan
- Maelgwn Fychan
- Maelog Crwm
- Mallt
M, continued
- Mallt Ddu ferch Morgan
- Mallt Fechan
- Mallt ferch Gruffudd Llwyd
- Mallt ferch Gwilym
- Mallt ferch Gwilym ap Phylip
- Mallt ferch Lleision ap Morgan
- Mallt ferch Morus
- Mallt ferch Rhys
- Mallt ferch Tudur
- Mallt Gam
- Mallt o Went
- Marared
- Marared Ddu
- Marared Fechan ferch Bleddyn
- Marared ferch Cadell ap Rhydderch
- Marared ferch Cadwgan
- Marared ferch Einion
- Marared ferch Ithel Fychan
- Marared ferch Llywelyn
- Marared ferch Phylip
- Marared ferch Rhydderch
- Marared ferch Tudur ap Goronwy
- Marared Goch
- Marared o Faelor
- Maredudd
- Maredudd ap Bleddyn
- Maredudd ap Bleddyn ap Rhirid
- Maredudd ap Rhys Gryg
- Maredudd ap Tudur
- Maredudd Ddall
- Maredudd o Gedewain
- Maredudd o Ystrad Tywi
- Marged Fechan
- Marged ferch Dafydd ap Hopcyn
M, continued
- Marged ferch Ieuan
- Marged ferch Llywelyn
- Marged ferch Siencyn
- Marged ferch Tomas
- Marged Wen ferch Llywelyn
- Marsli
- Marsli ferch Gwilym
- Marsli ferch Huw ap Rhisiart
- Marsli ferch Rhys
- Mathau ap Gwilym
- Mathau Goch
- Mawd
- Mawd ferch Rhosier
- Mawd ferch Watcyn
- Mawd ferch Watcyn ap Rhosier
- Meddefus
- Meddefus ferch Gwenwynwyn
- Meddefus ferch Llywelyn ab Owain
- Meddefus ferch Seisyll
- Meilyr ab Ithel
- Meilyr ap Gwgon ap Rhiwallon
- Meilyr ap Tudur ap Rhirid
- Meilyr Brydydd
- Meistr Dafydd ap Rhisiart
- Meistr Gruffudd
- Meistr Harri
- Meistr Rhys
- Meurig ab Adda ap Madog
- Meurig ap Trahaearn
- Meurig Ddu ap Carwed
- Meurig Fychan
- Meurig Hen
- Meurig Llwyd
- Morfudd
M, continued
- Morfudd Ddu ferch Goronwy
- Morfudd ferch Caradog ab Ifor
- Morfudd ferch Dafydd Ddu
- Morfudd ferch Hwfa
- Morfudd ferch Iolyn
- Morfudd ferch Madog ap Hwfa
- Morfudd ferch Ynyr
- Morfudd Gethin
- Morfudd Llwyd
- Morfudd o Eifionydd
- Morfudd Wen
- Morgan ap Caradog
- Morgan ap Dafydd Gam
- Morgan Fychan
- Morgan Gam
- Morgan o Forgannwg
- Morgeneu
- Moriddig
- Moriddig ap Cedifor ap Selyf
- Moriddig ap Rhydderch
- Moriddig Hen
- Morus
- Morus ab Ieuan
- Morus ap Lewys
- Morus ap Siôn
- Morus Llwyd
- Myfanwy ferch Goronwy Ddu
- Myfanwy ferch Ieuaf ab Awr
- Myfanwy ferch Iocyn
- Myfanwy ferch Rheinallt
- Myfanwy ferch Tudur
- Myfanwy ferch Tudur ap Trahaearn
- Myfanwy Fychan
- Myfanwy o Ddinas Brân
- Myfanwy Wen
N: 20 names
- Nefydd
- Nefydd ab Uchdryd ap Bleiddudd
- Nefydd ap Hwfa
- Nefydd Hardd
- Nest
- Nest Fechan
- Nest ferch Cadwgan ap Bleddyn
- Nest ferch Cedifor
- Nest ferch Dyfnwal
- Nest ferch Gwgon ap Meilyr
- Nest ferch Hywel
- Nest ferch Iago
- Nest ferch Madog Goch
- Nest ferch Madyn
- Nest ferch Rhirid ab Uchdryd
- Nest ferch Rhys
- Nest o Bowys
- Nest Wen
- Nicolas ap Phylip
- Nicolas Fychan
O: 13 names
- Osbwrn Wyddel
- Owain ab Edwin
- Owain ap Llywelyn ab y Moel
- Owain ap Maredudd ap Tudur
- Owain Brogyntyn
- Owain Cyfeiliog
- Owain Fychan
- Owain Glyndŵr
- Owain Goch
- Owain Gwynedd
- Owain Lawgoch
- Owain o'r Brithdir
- Owain Wan
P: 12 names
- Perwyr
- Perwyr ferch Cadwgan Hir
- Perwyr ferch Rhirid
- Perwyr ferch Tegwared ab Iarddur
- Perwyr Wen
- Peryf ap Cedifor
- Phylip
- Phylip ap Gwilym ap Meurig
- Phylip Brydydd
- Phylip Emlyn
- Phylip Fychan
- Prydydd y Moch
R: 62 names
- Rhahawd
- Rhahawd ab Einion
- Rhanullt
- Rhanullt ferch Anarawd
- Rheinallt ap Bedo
- Rheinallt ap Morus
- Rheinallt Fychan ap Rheinallt
- Rheinallt o'r Wyddgrug
- Rheinallt Wyn
- Rhirid
- Rhirid ab Einion ap Gwgon
- Rhirid ap Cuhelyn ap Griffri
- Rhirid Flaidd
- Rhirid Hir
- Rhisiart ap Madog
- Rhisiart Fychan
- Rhisierdyn
- Rhiwallon
- Rhiwallon ap Cynfyn
- Rhiwallon ap Llywarch ap Meilyr
- Rhiwallon ap Tegwared
- Rhiwallon Feddyg
- Rhiwallon Hen
- Rhobert ap Huw
- Rhobert Leiaf
- Rhobert Wyn
- Rhodri ab Owain
- Rhodri ap Cadwaladr
- Rhosier
- Rhosier ap Gwallter
- Rhosier ap Siencyn
R, continued
- Rhosier Fychan
- Rhosier Hen
- Rhosier o'r Gelli
- Rhydderch ab Ieuan Llwyd
- Rhydderch ap Tewdwr ap Cadell
- Rhydderch Gloff
- Rhygyfarch
- Rhygyfarch ap Sulien
- Rhys ap Gruffudd
- Rhys ap Maredudd
- Rhys ap Tewdwr
- Rhys ap Tomas
- Rhys ap Tudur
- Rhys Brydydd
- Rhys Chwith
- Rhys Ddu
- Rhys Fardd
- Rhys Fychan
- Rhys Gethin
- Rhys Goch Eryri
- Rhys Goch Glyndyfrdwy
- Rhys Gryg
- Rhys Hen
- Rhys Ieuanc
- Rhys Mechyll
- Rhys Meigen
- Rhys Nanmor
- Rhys Pennardd
- Rhys Sais
- Rhys Wyndod
- Robin Ddu
S: 53 names
- Sanan
- Sanan ferch Bleddyn Sais
- Sanan ferch Dyfnwal
- Sanan ferch Griffri
- Sanan ferch Uchdryd ap Gwrgenau
- Sanan Goch
- Sandde
- Sandde Hardd
- Sefnyn
- Seisyll
- Seisyll ap Dyfnwal
- Seisyll ap Gwgon
- Seisyll Bryffwrch
- Seisyll Foel
- Selyf
- Selyf ap Cynfelyn
- Selyf ap Gwallter ap Moriddig
- Senana
- Senana ferch Caradog
- Senana ferch Cynan ab Idwal
- Senana ferch Rhirid Foel
- Senana ferch Tewdwr
- Siencyn
- Siencyn Ddu ap Hopcyn
- Siencyn Goch
- Siencyn o Gydweli
S, continued
- Siôn ap Rhisiart
- Siôn ap Rhobert
- Siôn ap Wiliam
- Siôn Cent
- Siôn Hir
- Siôn Llwyd
- Sioned ferch Harri
- Sioned ferch Hywel ap Siencyn
- Sioned ferch Rhisiart
- Sioned ferch Siencyn Llwyd
- Sioned Goch ferch Siencyn
- Sioned Llwyd
- Siwan ferch Nicolas
- Siwan ferch Tomas ap Gwilym
- Siwan ferch Wiliam
- Siwan Wen
- Sulien ap Rhygyfarch
- Susanna
- Susanna ferch Adda Goch
- Susanna ferch Daniel
- Susanna ferch Daniel ap Selyf
- Susanna ferch Llywelyn
- Sypyn Cyfeiliog
- Syr Lewys
- Syr Rhys o Garno
- Syr Siôn ap Hywel
- Syr Tudur
T: 43 names
- Tangno
- Tangno ap Bledri ap Cedifor
- Tangno ap Gwrgenau
- Tangwystl
- Tangwystl Fechan
- Tangwystl ferch Cadwgan
- Tangwystl ferch Dafydd
- Tangwystl ferch Madog ab Einion
- Tangwystl ferch Meilyr
- Tangwystl ferch Moriddig
- Tangwystl ferch Tudur Hen
- Tangwystl Goch
- Tangwystl Llwyd
- Tangwystl o Arfon
- Tangwystl Wen ferch Einion
- Tegwared
- Tegwared ap Cynwrig ap Hwfa
- Tegwared ap Seisyll ap Cuhelyn
- Tegwared Fardd
- Tegwared Gryg
- Tegwared o Arllechwedd
T, continued
- Tewdwr
- Tomas ap Rhodri
- Tomas Fychan
- Tomas Tew
- Trahaearn ab Ieuaf
- Trahaearn ab Ithel ap Cadwgan
- Trahaearn ap Caradog
- Trahaearn Brydydd Mawr
- Trahaearn Fychan
- Tudur
- Tudur ab Iorwerth ap Gwrgenau
- Tudur Aled
- Tudur ap Cynwrig ap Madog
- Tudur ap Goronwy
- Tudur ap Gwyn Hagr
- Tudur ap Rhobert
- Tudur ap Rhys Sais
- Tudur Ddall
- Tudur Fychan ap Goronwy
- Tudur Hen
- Tudur Leiaf
- Tudur Penllyn
U: 5 names
- Uchdryd
- Uchdryd ab Edwin
- Uchdryd ap Griffri
- Uchdryd ap Sandde ap Nefydd
- Uchdryd Hir
W: 11 names
- Watcyn
- Watcyn ap Rhosier
- Watcyn ap Tomas
- Watcyn Fychan
- Watcyn Llwyd ap Rhosier
- Watcyn o'r Fenni
- Wiliam ap Rhisiart
- Wiliam ap Siôn
- Wiliam ap Tomas ap Hopcyn
- Wiliam Gam
- Wiliam Goch