George Rowan-Hamilton (born 1845) (b. 1845) Parents Catherine Caldwell Archibald Rowan-Hamilton Children Catherine Harriot Mona Rowan-Hamilton Sir Sydney Orme Rowan-Hamilton Helen Ethelwyn Rowan-Hamilton Siblings Mary Rowan-Hamilton Frederick Rowan-Hamilton Sidney Rowan Rowan-Hamilton Helen Rowan-Hamilton Gawin Rowan-Hamilton Hariot Hamilton-Temple-Blackwood, Marchioness of Dufferin and Ava Partners Helen Maundesley