Joyce married Ynyr "Ddu" "The Black" Ap DYFNWAL, King Of Gwent in 924 in Gwent, Wales. Ynyr (son of King Owain Ap Hywel Of GLAMORGAN and Elen Verch Rhodri Of GWYNEDD) was born about 885 in Gwent, Monmouthshire, Wales; and died. [Group Sheet] [Family Chart]