Question: Who is the paternal grandfather of Cadfan Ap Cadwaladr?
Sentence (from "Cadwaladr ap Gruffydd"): Cadwaladr ap Gruffydd (c. 1100 – 1172) was the third son of Gruffudd ap Cynan, King of Gwynedd, and brother of Owain Gwynedd.
Relevant evidence: Yes