William Mackworth Praed was a brother of Herbert Mackworth senior, and took the name of Praed when he inherited the Praed estates. Both his father-in-law and he sat for St. Ives, and it was on the family interest and by agreement with Lord Buckinghamshire that Humphrey Mackworth Praed was returned in 1761. The political managers did not know what to make of him. In Bute’s list he was first classed ‘Lord Buckingham’ and ‘Tory’—designations crossed out subsequently. In Newcastle’s list of 13 Nov. 1762 he appears as a supporter of the court—but on 9 Dec. he voted against the peace preliminaries when so many on whom Newcastle had counted, left him. He was classed as ‘doubtful’ by Jenkinson in the autumn of 1763; voted again with Opposition on general warrants, 6, 18 Feb. 1764; and was therefore listed as a ‘sure friend’ by Newcastle on 10 May. Rockingham classed him as ‘doubtful’ in the summer of 1765, and as ‘Tory’ in November 1766. He voted with Administration on the land tax, 27 Feb. 1767; and was listed as ‘doubtful or absent’ by Newcastle, 2 Mar. 1767. He did not stand in 1768.
In January 1771 he started together with Francis Basset and Sir William Lemon the Copper Miners’ Bank at Truro, but left it within six months, and in June 1771 founded together with Sir John Molesworth and Edward Eliot the Cornish Bank, also at Truro.
Praed was a banker and mining adventurer rather than a politician; his bank, which in 1800 became Praed Co., was ‘a successful bank comparatively well-managed by contemporary standards’.
Praed died 6 Mar. 1803, aged 84.
