Seisyll ap Ednywain
Seisyll ap was born in 0938 in Wales.  Seisyll ap is no longer alive.

 Prawst verch Elise
Prawst verch was born in 0940 in Gwynedd, Wales.

 Llywelyn ap Seisyll , Prince of North Wales
Llywelyn ap was born in 0980 in Rhuddlan, Flintshire, Wales.  He died at the age of 43 in 1023.