William Cleghorn

William Cleghorn (1718 – August 1754) was a British philosopher. He was born to a successful Scottish brewer, Hugh Cleghorn, and Jean Hamilton, and died in 1754, aged 36. William Cleghorn held the Chair of Pneumatics and Moral Philosophy at the University of Edinburgh from 1745 until his death in 1754. Four volumes of notes on Cleghorn's lectures on moral philosophy from 1746 to 1747 are stored at the University of Edinburgh library.

Cleghorn: David Hume's rival Cleghorn is primarily remembered for being a rival of the more famous philosopher David Hume. It has also been claimed that Cleghorn recommended, shortly before his death, that Ferguson be given the Chair of Pneumatics and Moral Philosophy once he had died. Ferguson was not given the chair at this time, although he was given it later.