Congrès celtique
He was President of the National Union of Welsh Societies, 1916–26, President of the Celtic Congress, 1918–27 and President of the Peace Society, 1924–27. He was a member of the Honourable Society of Cymrodorion, the Cambrian Archæological Society, the Historical Society of West Wales and the Anglesey Antiquarian Society. He served as a Justice of the Peace for the Borough of Middlesbrough.