Gruffydd married of Mercia Ealdgyth about 1058. Ealdgyth (daughter of Earl of Mercia III Ælfgar and Ælgifu) was born about 1034 in Mercia, England; died after 1086 in France. [Group Sheet] [Family Chart]
Llywelyn married Angharad verch Maredydd about 1058. Angharad (daughter of Maredydd ap Owain) was born about 982 in Deheubarth, Wales. [Group Sheet] [Family Chart]
Owain married Angharad verch Llewelyn. Angharad (daughter of Llywelyn ap Merfyn) was born about 918 in Llandeilo, Carmarthshire, Wales. [Group Sheet] [Family Chart]