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Birth:          ABT 1002 of Powys, Wales
of Powys, Wales

Notes
https://en.wikipedia.org/wiki/Cynfyn_ap_Gwersytan
Cynfyn ap Gwerystan (born c. 990[1]) — sometimes spelled Kynvyn, Kynwyn, Cynvyn, or 
Kynfyn — was a Welsh nobleman,[2] principally known on account of his son Bleddyn 
ap Cynfyn, who established the House of Mathrafal over Powys as a consequence of 
a Saxon invasion in 1063.[citation needed]
Interim King of Powys[edit]

His father was Gwerystan ap Gwaithfoed and his mother Nest ferch Cadell.[3][4] 
Cynfyn married Angharad ferch Maredudd, daughter of Maredudd ab Owain, king of 
Dyfed.[5]

Wolcott states that "When he was born c. 985, there was no expectation Cynfyn 
would ever become a king. His ancestors had been among the leading men of Powys 
for hundreds of years, but the kingdom had been ruled by another ancient family which 
was still in power. His father had married the daughter, and only child, of King Cadell 
ap Brochwel II. But Cadell had brothers and nephews eligible to rule after his death; 
seldom did a Welsh kingship descend through female lines, and never if there was an 
eligible qualified male heir. But such a circumstance appears to have occurred in 
1023, when the existing king died (or was killed) fairly early in his life and at a time 
when both his son and other qualified males in the Royal Family were too young for 
kingship." However, an ancestor of Cynfyn was Cynwrig, son of Tegonwy, a 
descendant of Casnar Wledig whom in some cases is made son of Caderyn, while in 
more ancient documents he is son of Gloyw Gwlat Lydan and Great Grandson of Ludd 
ap Beli Mawr, making him a descendant of a direct patrilineal line from the house of 
Gwertherion or the Celtic Kings of Britain, which could explain why Gwerstan was 
chosen to marry Nest ferch Cadell. [6]

Wolcott further argues that Cynfyn was a caretaker monarch until 1033, when Iago ap 
Idwal of Gwynedd came of age and took the kingship.[7] A dictionary of biography of 
eminent welshmen

Children[edit]

With an unnamed Irish princess, daughter of Sitric Silkbeard c. 960 he had the 
following issue:
Eva ferch Cynfyn, who married Llewelyn ap Coel
Nest ferch Cynfyn, who married Ithel ap Coel, brother of Llewelyn
Iwerydd ferch Cynfyn

After the death of his first wife, possibly in childbirth, he married Angharad (daughter 
of Maredudd ab Owain), widow of Llywelyn ap Seisyll and had the following issue:
Rhiwallon ap Cynfyn (died 1070), killed at the Battle of Mechain
Bleddyn ap Cynfyn (died 1075), King of Gwynedd and Powys
Gwerfyl ferch Cynfyn, married Gwrgan ap Ithel Ddu of Glamorgan, and was mother to 
Iestyn ap Gwrgan.

Parents
AP GWAITHFOED Gwerystan (ABT  970 - )
VERCH CADELL Nest (ABT  970 - )

Siblings
AP GWERYSTAN Cynfyn (ABT 1002 - )
VERCH GWERYSTAN ----- (ABT 1004 - )

Marriage To VERCH MAREDYDD Angharad (ABT  982 - )
    m.  

Notes

Parents
AP OWAIN Maredydd (ABT  938 -  999)
----- ----- ()

Children by VERCH MAREDYDD Angharad ABT  982 - 
VERCH CYNFYN Iwerydd (ABT 1024 - )
AP CYNFYN Rhiwallon (ABT 1025 - 1070)
AP CYNFYN Bleddyn (ABT 1025 - 1073)

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