Iorwerth Drwyndwn ap Owain Gwynedd
Iorwerth Drwyndwn ap Owain was born before 1169 in Aberffraw Castle3, Aberffraw, Anglesey, Wales.  He died in 1174 in Pennant Mehangell.

 Marared verch Madoc of Powys
Marared verch Madoc of was born in Montgomeryshire, Wales.  Marared verch Madoc of is no longer alive.

 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.

 Adda ap Iorwerth Drwyndwn
Adda ap Iorwerth was born before 1174.