Nielsen Hayden genealogy
Family: Tewdwr Mawr ap Cadell ab Einion ab Owain / (F695)
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Male
Tewdwr Mawr ap Cadell ab Einion ab Owain
Birth Abt 1000 Death Burial Marriage Father Cadell ab Einion ab Owain ap Hywel Dda | F4171 Group Sheet Mother Elinor ferch Gwerystan | F4171 Group Sheet
Male
+ Rhys ap Tewdyr, King of Deheubarth
Birth Death Apr 1093 Brycheiniog, Wales 
Burial Spouse Gwladus ferch Rhiwallon | F3697 Marriage Spouse (Unknown wife of Rhys ap Tewdyr) | F15915 Marriage