James Walter Grimston, 3rd Earl of Verulam (11 May 1852 – 11 November 1924), known as Viscount Grimston from 1852 to 1895, was a British Conservative Party politician who sat in the House of Commons from 1885 to 1892.
He was educated at Harrow School and became a lieutenant in the 1st Life Guards.
[2] In 1895 he succeeded his father in the earldom and entered the House of Lords.
Lord Verulam married Margaret Frances Graham, daughter of Sir Frederick Ulric Graham of Netherby, 3rd Baronet, and wife Lady Jane Hermione Seymour (daughter of Edward Seymour, 12th Duke of Somerset, and wife Jane Georgiana Sheridan), and widow of Alexander Aeneas Mackintosh, in 1878.
Scottish actress Rose Leslie is a matrilineal great-great-granddaughter of Verulam, through his second-youngest daughter.