Family: Iorwerth Drwyndwn ap Owain / Marared Verch Madog (F3252)
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Father | Male
Iorwerth Drwyndwn ap Owain
Born Between 1144 and 1145 Castle Aberffraw, Anglesey, Wales 
Died Abt 1174 Wales Buried Married Father Owain ap Gruffydd | F1994 Group Sheet Mother Gwladys verch Llywarch | F1994 Group Sheet
Mother | Female
Marared Verch Madog
Born Abt 1129 Montgomeryshire, Wales Died UNKNOWN Wales Buried Father Madog ap Maredydd | F2600 Group Sheet Mother Susanna verch Gruffydd | F2600 Group Sheet
Child 1 | Male
Llewelyn ap Iorwerth
Born 1173 Castle Aberffraw, Caernarvonshire, Wales Died 11 Apr 1240 Aberconwy, Arllechwedd Isaf, Caernarvonshire, Wales Buried Spouse Joan Plantagenet | F2235 Married