William Spencer Beaumont

William Spencer Beaumont was a British army officer and a member of the London County Council.

Beaumont was the grandson of John Thomas Barber Beaumont, who raised the Queen Victoria's Rifles in 1803 during the Napoleonic Wars. His father was J. A. Beaumont of Surrey. Beaumont served as a captain in the 14th King's Hussars cavalry regiment in the British Army. In 1876 her married Honoria Cooper. In 1889 he was an elected a member of the London County Council to represent Tower Hamlets, Stepney. In 1890 Beaumont petitioned Ecclesiastical Commissioners for a Church site.

Beaumont was the father of Dudley John Beaumont (1874–1918), who married Sibyl Collings, later 21st Seigneur of Sark. His grandson was Francis William Lionel Beaumont (1903–1941) and his great-grandson is the 22nd Seigneur of Sark, John Michael Beaumont.