Horace Pitt-Rivers, 3rd Baron Rivers
William Horace Pitt-Rivers, 3rd Baron Rivers, known as Horace Beckford until 1828, was a British peer and gambler. The only surviving son of Peter Beckford of Steepleton Iwerne and Louisa Pitt, he married Frances Rigby on 9 February 1808, in the house of her father, Lieutenant-Colonel Francis Hale Rigby in Upper Grosvenor Street, London. They had four children:
- George Pitt-Rivers, 4th Baron Rivers
- Horace Pitt-Rivers, 6th Baron Rivers
- Fanny Pitt, married Frederick William Cox on 24 July 1834
- Harriet Elizabeth Pitt, maid of honour to Queen Victoria, married on 18 September 1841 Charles Dashwood Bruce, without issue
His godson and relative, Sir Horace Rumbold, recounted that he had left a bond with a close friend pledging neither to play cards or dice again, and upheld this for some years. However, in January 1831, he was persuaded by friends to gamble again, and lost a small sum of money. Despairing of controlling his addiction, he drowned himself in The Serpentine on 23 January 1831. Contemporary reports, by contrast, suggested his losses in his last game had been large. His widow died on 6 September 1860 at Rushmore Lodge, in Cranborne Chase, Dorset.