Llywelyn traced his ancestry to Sandde, a different son of Llywarch Hen from that claimed by the kings of Gwynedd and Deheubarth.
Llywelyn the Last | Gruffydd ap Llywelyn | Llywelyn the Great | Llywelyn | Morgan Llywelyn | Madog ap Llywelyn | Llywelyn the Elder ap Maredudd ap Cynan ab Owain Gwynedd | Llywelyn Siôn | Llywelyn Bren | Llywelyn ap Dafydd |