Llywelyn Fawr the Great ap Iowerth of Wales
Llywelyn Fawr the Great ap Iowerth of was born in 1173 in Anglesey, Wales.  He died at the age of 67 on April 11th, 1240 in Aberconway, Carnarvon, Wales.  He was buried in 1240 in Aberconwy Abbey, Aberconvway, Carnarvon, Wales.

 Gwenllian verch Ednyfed Fychan of Brynffenigl

 Helen (Elen) verch Llywelyn of North Wales
Helen (Elen) verch Llywelyn of North was born before 1220.  She died after 1291.