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
Sam Mainwaring intellectual inspiration by the radical British labour leader Tom Mann. In his 1923 memoirs, Mann credited Mainwaring with having been "one of the very first to understand the significance of the revolutionary movement, and the first, as far as my knowledge goes, to appreciate industrial action as distinct from parliamentary action". Mainwaring was the namesake of a nephew whom he adopted, Sam Mainwaring Jr., himself an important radical activist in the international labour movement. Sam Mainwaring Samuel "Sam" Mainwaring (15 December 1841 – 29 September 1907) was a Welsh machinist and socialist political activist who was a founding member and