William Mainwaring (English politician) Burdett. Mainwaring had previously resisted Burdett's calls for an inquiry into prison abuses, particularly at Coldbath Fields Prison. Mainwaring was defeated by Burdett but the election was declared void in 1804 and in the following contest William's son George Boulton Mainwaring was elected. The result was reversed in favour of Burdett in 1805 and the back in favour of Mainwaring Junior in 1806. Mainwaring did not contest the 1807 election and Burdett was not elected. He died in 1821, leaving one son. William Mainwaring (English politician) William Mainwaring (6 Oct 1735 – 28 February 1821) was the MP for Middlesex
Billy Mainwaring Billy Mainwaring Gwilym Thomas Mainwaring, known as Billy Mainwaring, (born 24 January 1941 in Port Talbot) is a retired Welsh international second row rugby union player who played for Aberavon RFC. Nurtured in his village team of Taibach RFC, Mainwaring was a regular member of the Aberavon RFC team before his first cap in 1966-7 season against Scotland at Murrayfield. He played in all of the Welsh games of that term. In the following season, he was one of four Aberavon RFC players who played against the touring All Blacks (the others being fellow second row Max Wiltshire, centre Ian