Madog ap Iowerth
Madog was born about 1056 in Radnorshire, Wales.  He died in 1140.

 Rhanullt verch Gruffydd
Rhanullt was born about 1083 in Caernarvonshire, Wales.

 Cadwallon ap Madog
Cadwallon was born in 1103 in Maelienydd, Radnor, Wales.  He died at the age of 76 on September 22nd, 1179.

 Mallt verch Madog
Mallt was born in 1107 in Maelienydd, Radnor, Wales.