. "4902865"^^ . . . . . "908"^^ . "Gruffydd ap Madog Fychan was according to some sources the son of Madog Fychan the hereditary Prince of Powys Fadog between 1304 and c. 1325."@en . . . . "1083166380"^^ . . . . . . "Gruffydd ap Madog Fychan"@en . . . . . . "Gruffydd ap Madog Fychan was according to some sources the son of Madog Fychan the hereditary Prince of Powys Fadog between 1304 and c. 1325."@en . . . . . .