Initial results indicated that he had been narrowly defeated by Henry Davies, but some branches had allowed non-members to vote, and when the election was re-run, Gwynne won.
Ramsay MacDonald asked him to stand for the Labour Representation Committee in East Carmarthenshire at the 1906 general election; the union was prepared to sponsor his candidacy, but it did not ultimately go ahead.
[1] Gwynne also involved himself with the Trades Union Congress (TUC), and in 1913 he was its delegate to the American Federation of Labour.
[5] He also served on various committees, including the court of Cardiff University, as Chairman of Swansea Technical College, and was appointed as a magistrate.
[7] The Millmen became part of the Iron and Steel Trades Confederation in 1921, and Gwynne was appointed as the new union's Tinplate Advisory Officer.