In 974 Hywel ap Ieuaf King Gwynedd raised an army and drove his uncle from Gwynedd.
In 980 Hywel ap Ieuaf King Gwynedd defeated Custennin ab Iago Aberffraw, son of his former enemy Iago ap Idwal Aberffraw (38) at the Battle of Anglesey, at Anglesey. Custennin was killed; he was supported by the Viking Gofraid mac Arailt Ivar.
In 985 Hywel ap Ieuaf King Gwynedd killed by his allies.
GrandFather: Idwal ap Anaward "Foel aka Bald" King Gwynedd
2G GrandFather: Anaward Aberffraw
3G GrandFather: Rhodri ap Mervyn "The Great" King Gwynedd
4G GrandFather: Merfyn "Frych aka Freckled" King Gwynedd
5G GrandFather: Gwriad ap Elidyr Aberffraw
5G GrandMother: Esyllt Anglesey
4G GrandMother: Nest ferch Cadell Cadelling
5G GrandFather: Cadell ap Brochfael King Powys
3G GrandMother: Angharad Seisyllwg
4G GrandFather: Meurig King Seisyllwg