Nielsen Hayden genealogy
Family: Madog ap Maredudd, Prince of Powys Fadog / (Unknown wife or mistress of Madog ap Maredudd) (F17628)
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Father | Male
Madog ap Maredudd, Prince of Powys Fadog
Born Died 1160 Winchester, Hampshire, England 
Buried St. Tysilio, Meifod, Powys, Wales Married Other Spouse Susanna ferch Gruffydd ap Cynan | F4086 Married Father Maredudd ap Bleddyn ap Cynfyn | F3345 Group Sheet Mother Hunydd ferch Einudd | F3345 Group Sheet
Child 1 | Female
+ Gwenllian ferch Madog
Born Died 1160 Buried Spouse Rhys ap Gruffydd, King of Deheubarth | F15911 Married
Child 2 | Male
+ Owain Brogyntyn ap Madog ap Maredudd ap Bleddyn, King of Powys
Born Died Buried Spouse Margred ferch Einion ap Seissyll | F17627 Married
Child 3 | Female
+ Margred ferch Madog
Born Died Buried Spouse Iorwerth Drwyndwn ap Owain Gwynedd | F993 Married