Born at Poltimore, Devon, Beaumont was a member of a politically distinguished and extremely wealthy family, who owned extensive estates and lead mines in Northumberland and Yorkshire.
Three months after his 23rd birthday, Beaumont came forward in the Liberal interest to contest Northumberland South at the general election of 1852. He championed free trade and state education for all religious denominations, and despite the presence of a second Liberal candidate, maintained that he was ‘neutral’. Although his Conservative opponent ridiculed his youth and alluded to his father’s silence in the House, he comfortably topped the poll.
At the 1857 general election, Beaumont strenuously supported Palmerston’s leadership, particularly over China, and criticised Gladstone for resigning from the ministry.
He reiterated this position at the 1859 general election, declaring that on franchise reform, he followed ‘an independent course free from party tactics’, proof of which, he argued, was his support for Locke King’s motion for a £5 borough franchise and £10 county franchise, but his continued opposition to the ballot.
Beaumont stood again without opposition at the 1865 general election and declared that ‘his heart and soul were liberal’.
In a rare flourish of activity, Beaumont made a number of contributions to the corrupt practices debate in July 1868. He moved but subsequently withdrew an amendment that one half of the returning officer’s expenses should be paid out of the rates, 18 July, and four days later he spoke in favour of a clause to make illegal the payment of expenses for conveying voters. His amendment that a candidate not polling one fifth of the total number of electors should be liable, along with his proposer and seconder, for his share of the returning officer’s expenses was defeated 110-119, 23 July.
Beaumont continued to represent Northumberland South without interruption until its abolition in 1885. A supporter of Gladstone over home rule, he was returned for Tyneside in 1886 and retired from political life at the 1892 dissolution. In July 1906 he was created Baron Allendale of Allendale and Hexham in recognition of his services to the Liberal party in the north of England. He died at his London residence in February the next year, and was succeeded by his eldest son, Wentworth Canning Blackett Beaumont, Liberal member for Hexham, 1895-1907. The family’s Yorkshire estate papers are located in the Bretton Estate Archive at the University of Leeds.
