Family
Married/ Related to:  Unknown 1)Notes: Stewart Baldwin explains that to ascribe Angharad as mother of Iwerydd is probably inaccurate: "Note: ByT, p. 101 explicitly states that Iwerydd ferch Cynfyn (#37) was Cynfyn's daughter by a mother (unnamed) different from Angharad. ABT.2f,7k states that Angharad was Iweydd's mother. Since it is a common mistake to assume that all of a man's children are by his known wife, it is more likely that ByT is correct here. For Angharad and her ancestors, see #49, #98, etc." Child: | |||
| 2nd marriage/ relation  Cynfyn ap Gwerstan of Powys 1)Son of Gwerystan of Powys and Unknown. Married/ Related to: Children: 1. Bleddyn ap Cynfyn of Powys, King of Powys and Gwynedd 1)Died 1075 Notes: Bleddyn ap Cynfyn (Old Welsh: Bledẏnt uab Kẏnỽẏn; d. ad 1073), sometimes spelled Blethyn, was an 11th-century Welsh king. Harold Godwinson and Tostig Godwinson installed him as the ruler of Gwynedd on his father's death in 1063, during their destruction of the kingdom of Bleddyn's half-brother, Gruffydd ap Llywelyn. He became king of Powys on his brother Rhiwallon's death in 1069. His descendants continued to rule Powys as the House of Mathrafal. | |||
Sources
1) Source: Llywelyn ap Iorwerth ancestor table . External Linkhttp://sites.rootsweb.com/~medieval/llywelyn.htm (Data from secondary evidence)