Captain Lord Hugh William Grosvenor (6 April 1884 – 30 October 1914) was the son of Hugh Grosvenor, 1st Duke of Westminster and his second wife, formerly The Hon. Katherine Cavendish.
Grosvenor was the commander of C Squadron, 1st Life Guards, and was killed in action, aged thirty, during World War I. Having no known grave, he is commemorated on the Menin Gate Memorial, Ypres.This was because the bodies of Lord Hugh and one hundred other soldiers were never found - it was as if they had never existed.
He married Lady Mabel Crichton, daughter of John Crichton, 4th Earl Erne and his wife, the former Lady Florence Cole, daughter of William Cole, 3rd Earl of Enniskillen, on 21 April 1906.
Children of Lord and Lady Hugh Grosvenor:
He was one of a number of British polo players who died in World War I.