Seissyllt ap Ednowain
Seissyllt ap was born in 0938 in Wales.

 Trawst ferch Eliseg
Trawst ferch was born in 0946 in Wales.

 Llywelyn ap Seisyll
Llywelyn ap was born about 0980 in Rhuddlan, Flintshire, Wales.  He died in 1031.