Mercy Greville noblewoman; (1904-1968); youngest child of Francis Greville, 5th Earl of Warwick, and Daisy Maynard (b. 1904) Parents Joseph Frederick Laycock Francis Greville, 5th Earl of Warwick Daisy Greville, Countess of Warwick Children Frances Elizabeth Tessa Dean Siblings Maynard Greville Josephine Laycock Peter Laycock Robert Laycock Rosemary Laycock Leopold Greville, 6th Earl of Warwick Charles Greville Marjorie Greville Partners Richard Marter Patrick Gamble Basil Dean