King of Deheubarth Llewelyn ap Seisyllt
Llewelyn ap Seisyllt was born about 0980 in
Rhuddlan. Llewelyn ap Seisyllt's father is
Seisyllt ap Ednowain and his mother is
Trawst verch Eliseg. His maternal grandfather is
Ellys *. He was an only child. He died due to assasinated in 1020.