In 1925, he married Elizabeth, daughter of the late Robert Jones-Griffith, of Dolgellau in Merionethshire.
Our Lady of Sorrows Church or its full name Our Lady of Seven Sorrows Church is a Roman Catholic parish church in Dolgellau, Gwynedd.
In the Owain Glyndŵr Memorial Hall are artifacts associated with the man himself: a copy of the Pennal Letter to King Charles VI of France, a document of 1405 ratifying the terms of a 1404 treaty between Owain and the French, a letter confirming the appointments of Owain's Chancellor, Gruffydd Young and Owain's brother-in-law, John Hanmer as Ambassadors to the French Court, pictures of the Parliament house in Dolgellau, a portrait drawn from Owain's seal, and a replica of this seal.