What was founded by Thomas Longman?

The Longman company was founded by Thomas Longman (1699 – 18 June 1755), the son of Ezekiel Longman (died 1708), a gentleman of Bristol. Thomas was apprenticed in 1716 to John Osborn, a London bookseller, and at the expiration of his apprenticeship married Osborn's daughter. In August 1724, he purchased the stock and household goods of William Taylor, the first publisher of Robinson Crusoe, for £2282 9s 6d. Taylor's two shops in Paternoster Row, London, were known respectively as the Black Swan and the Ship, premises at that time having signs rather than numbers, and became the publishing house premises.

Longman entered into a partnership with his father-in-law, Osborn, who held one-sixth of the shares in Ephraim Chambers's Cyclopaedia (1728). Longman himself was one of the six booksellers, who undertook the responsibility of Samuel Johnson's Dictionary (1746–1755).