John Calvert (1726–1804), was an English brewer and politician who sat in the House of Commons for 48 years between 1754 and 1802.
[2] Calvert was returned as Member of Parliament for Wendover by Lord Verney in a by-election on 25 February 1754 and was re-elected in the 1754 general election.
His father died on 29 April 1755 and he inherited a partnership in the family business at the Peacock Brewery, Whitecross Street which he ran successfully for many years.
He then lost his seat at Hertford in the 1780 general election but was returned by Lord Weymouth as MP for Tamworth in a by-election of November 1780.
He retired at the 1802 general election[1][3] Calvert died on 22 February 1804.