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
George Boulton Mainwaring 1805 and then back in favour of George in 1806. Mainwaring did not contest the 1807 election and Burdett was not elected. The National Portrait Gallery has a caricature which includes Mainwaring that pokes fun at the 1804 election. On 9 June 1804, Mainwaring married Letitia Wodehouse. George Boulton Mainwaring George Boulton Mainwaring was a Tory MP for Middlesex, a position that had also been held by his father William Mainwaring. Mainwaring is thought to have been born in 1773. He was the son of William Mainwaring. In the 1802 general election, William was opposed by the radical Francis Burdett.