Nielsen Hayden genealogy
Family: Madog ab Iorwerth ap Madog ap Gruffudd / Efa ferch Llywelyn ap Gruffudd (F17621)
-
Male
Madog ab Iorwerth ap Madog ap Gruffudd
Birth Death Burial Marriage Father Iorwerth ap Madog ap Gruffudd ab Owain Brogyntyn | F17623 Group Sheet Mother Lleucu ferch Llywelyn ap Gruffudd | F17623 Group Sheet
Female
Efa ferch Llywelyn ap Gruffudd
Birth Death Burial Father Llywelyn ap Gruffudd ap Gwenwynwyn | F17622 Group Sheet Mother Margred ferch Mardedudd Goch ap Maredudd ab Iorwerth Fychan | F17622 Group Sheet
Female
+ Gwerfyl ferch Madog
Birth of Hendwr in Edeirnion, Merionethshire, Wales 
Death Aft 1293 Burial Spouse Gronwy ap Tydyr Hên ap Gronwy | F12982 Marriage