Madog ap Llywelyn, or Prince Madoc, was from a junior branch of the House of Aberffraw and a distant relation of Llywelyn ap Gruffudd, the last recognised native Prince of Wales.
Read more about Madog Ap Llywelyn: Lineage, Revolt Against King Edward I, Edward's Fortresses Attacked, Battle of Maes Moydog and Defeat, Issue and Succession