Seisyll ap EDNYWAIN
Seisyll ap was born in 0938.  He died at the age of 92 in 1030.

 Prawst verch Elsie UNKNOWN
Prawst verch Elsie was born in 0949 in Gwynedd, Wales.  Prawst verch Elsie is no longer alive.

 Llewelyn ap SEISYLL
Llewelyn ap was born in 0968 in huddlan, Flintshire, Wales.  He died at the age of 53 in 1021.