Twrog

Saint Twrog was one of the sons of Ithel Hael of Llydaw (Brittany) and the brother of Saints Tegai, Trillo and Llechid. He probably came to Wales with Saint Cadfan, in the sixth century. He was a disciple of Saint Beuno and, according to tradition, his scribe; he is said to have written the Book of Beuno (Tiboeth), a famous Welsh manuscript, now lost, kept at the church of Clynnog until a fire. He founded the church at Maentwrog and refounded the chapel on Saint Twrog's Island; he is also patron of the church at Llandwrog. The local legend says that he threw from the summit of Moelwyn the great block of stone that stands beside the church at Maentwrog.

He is commemorated on 26 June.