Llywelyn Fawr ap Iowerth
Llywelyn Fawr ap was born in 1173 in Aberffraw Castle, Aberconway, Wales.  He died at the age of 67 on April 11th, 1240 in Aberconway, Caernarvonshire, Wales.  He was buried in Conway.

 Joan Plantagenet
Joan was born on July 22nd, 1190 in Newark Castle, Nottinghamshire, England.  She died at the age of 46 in February 1237 in Aberconway, Carnarvonshire, Wales.  She was buried on February 2nd, 1237 in Llan-faes, Llanvaens, Anglesey, Wales.

 Gwenllian verch Llywelyn
Gwenllian verch was born about 1207.

 Margaret Drwyndon verch Llewelyn Fawr
Margaret Drwyndon verch Llewelyn was born about 1208 in Caernavonshire, Wales.  She died in 1263 in Clifford Castle, Hertfordshire, England.  She was buried in Priory Church, Alconbury, Herefordshire, England.

 Dafydd ap Llywelyn
Dafydd ap was born about 1209 in Wales.  He died in 1246.

 Tegwared ap Llywelyn
Tegwared ap was born about 1211 in Wales.

 ? verch Llywelyn
? verch was born about 1214.

 Angharad verch Llywelyn
Angharad verch was born about 1215.

 Helen Elen Llywelyn Fawr
Helen Elen Llywelyn was born about 1234 in Gwynedd, North Wales.  She died after February 1295 in Kildrummy Castle, Aberdeenshire, Scotland.