Lord Richard de Aquila Grosvenor was 1st Baron Stalbridge (1886). He married, first, the Hon. Beatrice Charlotte Elizabeth Vesey (d. 1876), and secondly, Eleanor Frances Beatrice Hamilton; they had three sons and one daughter.
He may have known JW in the mid-seventies, when his name appears in an address book (#12714).
Kelly's London Postal Directory, London; Debrett's Peerage, Baronetage and Knightage, London, 1907; Obituary, Times, London, 20 May 1912.