Gwenwynwn ap Owain
Gwenwynwn was born about 1151 in Montgomeryshire, Wales.  He died in 1216.

 Margred Corbet
Margred was born about 1170 in Cause, Shropshire, England.

 Prince Gruffudd Ap Gwenwynwyn of Powys
Gruffudd was born in Montgomeryshire, Wales.  He died in 1236.