Robert Rundell Guinness Irish banker, most famous for co-founding the Guinness Mahon bank in 1836 (1789–1857) Parents Mary Darley Richard Guinness Children Emily Maria Guinness Edith Anne Guinness Elizabeth Anne Guinness Robert Guinness Henry Guinness Susan Rachel Guinness Richard Seymour Guinness Henrietta Guinness Margaret Sophia Guinness Mary Catherine Ferguson Siblings Jane Guinness Richard Samuel Guinness George Gore Guinness Henrietta Guinness Mary Guinness Sarah Guinness Samuel Guinness Elizabeth Guinness Frances Guinness Olivia Guinness Richard Guinness Partners Mary Anne Seymour Mary Anne Moore