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.

 Joan (Joanna) of England
Joan (Joanna) of was born in 1191.  She died in Aber.  She was buried in Friary of Llanfaes, Wales.

 Elen (Helena) verch Llywelyn Fawr
Elen (Helena) verch Llywelyn was born about 1206.  She died in 1253.

 Dafydd II ap Llywelyn Fawr
Dafydd II ap Llywelyn was born in November 1208 in Gwynedd, Wales.  He died in Aberconwy, Arllechwedd Uchaf, Caernarvonshire, Wales.

 Angharad verch Llywelyn Fawr
Angharad verch Llywelyn was born about 1212.

 Margaret verch Llywelyn Fawr
Margaret verch Llywelyn was born about 1226.  She died in 1263.

 Tegwared-y-Bais Wen ap Llywelyn Fawr
Tegwared-y-Bais Wen ap Llywelyn was born before 1237.