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

 Hawis le Strange
Hawis was born about 1234 in Cheswardine, Shropshire, England.  She died after 1310.

 Lord Llewelyn ap Gruffudd of Mechain of Powys
Llewelyn was born about 1248 in Powys, Montgomeryshire, Wales.

 Margaret ferch Gruffydd
Margaret was born about 1254.  She died on May 11th, 1336.

 Lord Owain Ap Griffin De La POLE
Owain was born about 1257 in Montgomeryshire, Wales.  He died in 1293.