Owain "Wan", born about 1070, was the son of Caradog ap Gruffudd ap Rhydderch and his wife Gwenllian ferch Bleddyn and was of the tribe of Rhydderch ap Iestyn. He was "of, Caerllion, Llangadog, Monmouthshire, Wales" and was arglwydd of Caerllion from 1081 until 1116. "Wan" means weak or feeble in Welsh.
The name of his wife is not known, but he had four known children:
Morgan ab Owain "Wan", b. Abt 1100, of, , Monmouthshire, Wales, d. 1158 (Age ~ 58 years)
Iorwerth ab Owain "Wan", arglwydd of Caerllion, b. Abt 1100, of, Caerllion, Llangadog, Monmouthshire, Wales, d. 1175 (Age ~ 75 years); m. Angharad ferch Uchdrud
Owain "Pen-carn" ab Owain "Wan", b. Abt 1100, of, Caerllion, Llangadog, Monmouthshire, Wales, d. Aft 1175 (Age ~ 76 years)
Dyddgu ferch Owain "Wan", b. Abt 1100, of, Caerllion, Llangadog, Monmouthshire; m. Seisyll ap Dyfnwal, arglwydd of Castell Arnallt,
He was entrusted with the defense of Caerfyrddin (Carmarthen) Castle in 1113, then held by the Normans, and was killed in 1116 when an assault was made by Gruffudd ap Rhys. You can read about the castle at Castles of Wales. He is buried at the Goldcliff Priory, Llebenydd, Monmouthshire, Wales.
It may be possible to confirm family relationships with Owain Wan by comparing test results with other
carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: