Mangles’s father may have been the Robert Mangles who was baptized at Tynemouth in March 1733; he certainly had property in the north-east of England, although he was for many years engaged in trade at Wapping.
He divided for the second reading of the reintroduced reform bill, 6 July, and generally for its details, although he voted for the complete disfranchisement of Saltash, on which ministers failed to provide a clear lead, 26 July, and against the partial disfranchisement of Guildford, 29 July 1831. On the latter occasion he read extracts from his constituents’ petition to support his argument that a town ‘largely increasing both in population and in wealth’ should be permitted to retain both its Members. He voted for the bill’s third reading, 19 Sept., its passage, 21 Sept., the second reading of the Scottish bill, 23 Sept., and Lord Ebrington’s confidence motion, 10 Oct. He divided in the minorities for O’Connell’s motion to swear in the 11 members of the Dublin election committee, 29 July, and to postpone the issue of a new writ, 8 Aug., but voted to prosecute only those guilty of bribery and against the motion censuring the Irish administration for use of undue influence, 23 Aug. He supported a petition calling for the regulation of steam vessels, 3 Sept., and was in the minority for protection of the West Indian sugar trade, 12 Sept. He divided for the second reading of the revised reform bill, which afforded Guildford a total reprieve, 17 Dec. 1831, and later gave an ‘elegant entertainment’ to members of the borough’s corporation.
Mangles was returned for Guildford at the general election of 1832 and sat as a Liberal until his defeat in 1837. He died in September 1838. It appears that he had acquired more real estate in Surrey, which he left to his wife with provision for his sons to exercise a right of purchase. Ross Donnelly Mangles (1801-77), Liberal Member for Guildford, 1841-58, and chairman of the East India Company, 1857-8, took up the option on the Woodbridge property, while Charles Edward Mangles (1798-1873), Liberal Member for Newport, 1857-9, took on the Poyle Park estate near Farnham. Mangles’s personal estate was sworn under £25,000.
