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
Mainwaring baronets Mainwaring baronets The Baronetcy of Mainwaring of Over-Peover has twice been created for members of the family of Mainwaring of Over-Peover, Cheshire. It was created on 22 November 1660 by Charles II on his restoration, for Thomas Mainwaring, High Sheriff of Cheshire in 1657 and Knight of the Shire otherwise Member of Parliament for Cheshire in 1660. The baronetcy was extinct on the death of the 4th Baronet. However his widow remarried and her son by the second marriage Thomas Weterall eventually inherited the Mainwaring Cheshire estate and changed his surname to Mainwaring. The baronetcy was recreated in the Baronetage