Archibald Rowan-Hamilton (born 1818) (1818–1860) Parents Catherine Cockburn Gawen William Rowan Hamilton Children Sidney Rowan Rowan-Hamilton Hariot Hamilton-Temple-Blackwood, Marchioness of Dufferin and Ava Gawin Rowan-Hamilton Frederick Rowan-Hamilton Helen Rowan-Hamilton George Rowan-Hamilton Mary Rowan-Hamilton Siblings Melita Rowan-Hamilton George Rowan-Hamilton Partners Catherine Caldwell