William Massey-Mainwaring William Massey-Mainwaring The Honourable William Frederick Barton Massey-Mainwaring (28 May 1845 – 12 March 1907) was an Irish art collector and Conservative Party politician in the United Kingdom. The fifth son of Eyre Massey, 3rd Baron Clarina and his wife Susan Elizabeth "née" Burton, he was originally known as William Frederick Barton Massey. Educated at Trinity College Dublin, he was called to the bar at the Inner Temple, London. In 1872 he married Isabella Anne Milman, a widow and only child of Benjamin Lee Mainwaring of Knaresborough. He assumed the surname Massey-Mainwaring on marriage. Massey-Mainwaring was a well-known art collector
William Mainwaring men did not go in to work. Mainwaring did get the South Wales nomination for the secretaryship of the Miners' Federation of Great Britain in 1932, after the death of A. J. Cook. A preferential voting system was used, and Mainwaring came in third place on first preference votes, being eliminated from the voting. The death of Lieutenant-Colonel David Watts-Morgan, the Labour Member of Parliament (MP) for Rhondda East, in early 1933 left a vacancy for a Labour candidate in which the influence of the miners was predominant. Mainwaring's name was immediately mentioned as a possible candidate, with rivals including