John Grattan Guinness (1783-1850) (1783–1850) Parents Arthur Guinness Olivia Whitmore Children unknown Guinness Henry Grattan Guinness Arthur Guinness Siblings Elizabeth Guinness Hosea Guinness Edward Guinness Mary Anne Guinness William Guinness Benjamin Guinness Olivia Guinness Arthur Guinness Louisa Guinness Partners Susanna Hutton Jane Mary Lucretia Cramer