*Gronwy ap Maredudd
born Tyddyn Adda, Llanidan, Anglesey, Wales

father:
*Maredudd ap Iorwerth
born Menai cmt, Anglesey, Wales

mother:
*Angharad verch Hywel
born about 1135 Montgomeryshire, Wales

siblings:
unknown

spouse:
*Adles verch Gronwy
born about 1224 Trecastell, Llangoed, Anglesey, Wales

children:
*Maredudd "Ddu" ap Gronwy
born Tyddyn Adda, Llanidan, Anglesey, Wales

biographical and/or anecdotal:

notes or source:
LDS
research of S. E. Oman Salt Lake City