Gwenwynwyn ap Owain
Gwenwynwyn ap was born about 1165 in Powys, Wales.  He died in 1220.

 Margaret Corbet
Margaret was born about 1188 in Wattlesboro, Shropshire, England.

 Constance verch Gwenwynwn
Constance verch was born about 1210 in Powys, Wales.

 Madog ap Gwenwynwn
Madog ap was born about 1215 in Powys, Wales.

 Gruffudd ap Gwenwynwyn
Gruffudd ap was born in 1220 in Powys, Mongomerieshire, Wales.  He died after February 21st, 1287.