King Cenue ap Coel Hen of Northern Britain

 Ystradwel ferch Gadeon
Ystradwel was born about 0350 in Britain.

 Gwrst ("Lledlwm") ap Ceneu
Gwrst, known as "Lledlwm", was born about 0400 in South Reged, Britain.  He died about 0505.

 King Maeswig Gloff of the North Britons
Maeswig Gloff was born about 0420.

 King Mor ap Ceneu of Northern Britain