Llywarch Hen the Old ap Elidir
Llywarch Hen the Old ap was born in 0534.  He died at the age of 100 in 0634.

 Gwen ap Llywarch
Gwen ap was born about 0555.

 Pill ap Llywarch
Pill ap was born about 0556.

 Llawr ap Llywarch
Llawr ap was born about 0557.

 Mechydd ap Llywarch
Mechydd ap was born about 0558.

 Maen ap Llywarch
Maen ap was born about 0559.

 Dwygwg ap Llywarch
Dwygwg ap was born about 0560.  He died after 0595.