Nielsen Hayden genealogy
Family: Dafydd Fychan ap Dafydd Llwyd ap Cynwrig / Nest ferch Ieuan ap Gruffudd (F12981)
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Male
Dafydd Fychan ap Dafydd Llwyd ap Cynwrig
Birth of Trefeilir in Malltraeth, Anglesey, Wales 
Death Burial Marriage Father Dafydd Llwyd | F12984 Group Sheet Mother Angharad ferch Gynffydd ap Tydyr | F12984 Group Sheet
Female
Nest ferch Ieuan ap Gruffudd
Birth of Eifionydd, Caernarvonshire, Wales Death Burial Father Ieuan ap Gruffudd ap Hywel | F12985 Group Sheet Mother Efa ferch Gruffudd ap Dafydd Goch ap Dafydd | F12985 Group Sheet
Female
+ Margred ferch Dafydd Vychan
Birth of Trefeilir in Malltraeth, Anglesey, Wales Death Burial Spouse Maredudd ap Tudur | F12979 Marriage