Family: Owen ap Gruffydd / Gwenllian verch Owain (fam05218)
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Male
Owen ap Gruffydd
Birth 1125 Southern Powys, Wales 
Death 1197 Abbey of Strata Marcella Burial Abbey of Strata Marcella Marriage Father Gruffydd ap Maredydd | fam05219 Group Sheet Mother Gwerful ferch Gwrgeneu | fam05219 Group Sheet
Female
Gwenllian verch Owain
Birth 1125 Caernarvonshire, Wales Death 1165 Burial Father Prince of Gwynedd Prince of Gwynedd Owain ap Gruffydd | fam01814 Group Sheet Mother Gwladus verch Llywarch | fam01814 Group Sheet
Female
Gwenllian ferch Owain Cyfeiliog
Birth 1138 Cyfeilog, Powys, Trefaldwyn, Cymru Death Yes, date unknown Burial
Male
Prince of Powis Prince of Powis Gwenwynwyn ap Owain
Birth 1165 Powys, Wales Death 1219 Burial Spouse Margaret Corbet | fam04931 Marriage
Female
Gwerful ferch Owain Cyfeiliog
Birth Powys, Cymru Death Yes, date unknown Burial Spouse Hywel ab Iorwerth, Arglwydd Caerllion | fam10046 Marriage