Biography
William Alexander Louis Stephen Douglas-Hamilton, 12th Duke of Hamilton, 9th Duke of Brandon, Duc de Châtellérault, was born 12 March 1845 in Connaught Place, Paddington, London, England, United Kingdom to William Douglas-Hamilton, 11th Duke of Hamilton (1811-1863) and Marie von Baden (1817-1888) and died 16 May 1895 Algiers, Algeria of unspecified causes. He married Mary Louise Elizabeth Montagu (1854-1934) 10 December 1873 in Kimbolton, Huntingdonshire, England, United Kingdom.
Children
| Name | Birth | Death | Joined with |
| Mary Louise Douglas-Hamilton (1884-1957) | 1 November 1884 London, England, United Kingdom | 21 February 1957 | James Graham, 6th Duke of Montrose (1878-1954) |
