William Duncombe, Viscount Helmsley

William Reginald Duncombe, Viscount Helmsley (1 August 1852 – 24 December 1881), was a British Conservative Party politician.

Helmsley was the son of William Duncombe, 1st Earl of Feversham, and his wife Mabel Violet (née Graham), daughter of Sir James Graham, 2nd Baronet.

He was elected to the House of Commons as one of two representatives for the North Riding of Yorkshire in the 1874 general election, a seat he held until his death seven years later.

[1] Lord Helmsley married the seventeen-year-old Lady Muriel Frances Louisa, daughter of Charles Chetwynd-Talbot, 19th Earl of Shrewsbury, in 1876.

Lady Helmsley was active in the Garden City movement.