Dudley Ryder, 6th Earl of Harrowby British politician (1892-1987) (1892–1987) Parents Mabel Danvers Smith John Ryder, 5th Earl of Harrowby Children Lady Frances Virginia Susan Ryder John Stuart Terrick Dudley Ryder Dudley Ryder, 7th Earl of Harrowby Siblings Alice Margaret Ryder Mary Alice Ryder Lady Frances Ryder Partners Lady Helena Blanche Coventry