Nielsen Hayden genealogy
Family: Llywelyn Fawr ap Iorwerth / (One of the several mistresses of Llywelyn ap Iorwerth) (F1936)
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Male
Llywelyn Fawr ap Iorwerth
Birth Abt 1173 Death 11 Apr 1240 Aberconwy Abbey, Conwy, Wales 
Burial Aberconwy Abbey, Conwy, Wales Marriage Other Spouse Tangwystl | F2104 Marriage Other Spouse Joan of England | F2856 Marriage Bef 23 Mar 1205 Other Spouse Eve Fitzwarine | F8310 Marriage 1239 Father Iorwerth Drwyndwn ap Owain Gwynedd | F993 Group Sheet Mother Margred ferch Madog | F993 Group Sheet
Female
+ Margaret ferch Llywelyn
Birth Death 1265 Burial Spouse John de Brewes | F2145 Marriage 1219 Spouse Walter IV de Clifford | F3791 Marriage Bef 2 Nov 1234
Male
+ Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd
Birth Abt 1200 Death Burial Spouse Gwenllian ferch Ednyfed Fychan | F17584 Marriage