The Honourable Lionel George William Guest (16 November 1880 - 27 September 1935) was a businessman and politician. The fourth son of Baron Wimborne, he was born at Wimborne House in the St James's district of Westminster. Following education at Eton and the Universities of Glasgow and Cambridge he entered business, working in financial management in Canada from 1901-11. In 1905 he married Flora Bigelow, daughter of a former US ambassador to Paris. From 1928-31 he was a Municipal Reform Party member of the London County Council, representing Stepney, Mile End.