Louisa O'Callaghan
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- 1 Louisa O'Callaghan [1] b. Unknown d. 17 Apr 1863
William Cavendish b. 10 Jan 1783 d. 15 Jan 1812
- 2 William Cavendish, 7th. Duke of Devonshire. KG. PC. [1.1]
b. 27 Apr 1808 d. 21 Dec 1891
Lady Blanche Georgiana Howard b. 11 Jan 1812 d. 27 Apr 1840
- 3 Spencer Compton Cavendish, 8th. Duke of Devonshire. KG. GCVO. PC. [1.1.1]
b. 23 Jul 1833 d. 24 Mar 1908
- + Louise Frederica Augusta von Alten b. 15 Jun 1832 d. 15 Jul 1911
- + Louise Frederica Augusta von Alten b. 15 Jun 1832 d. 15 Jul 1911
- 3 Lt. Col. Edward Cavendish [1.1.2]
b. 28 Jan 1838 d. 18 May 1891
Emma Elizabeth Lascelles b. 17 Nov 1838 d. 24 Sep 1920
- 4 Victor Christian William Cavendish, 9th. Duke of Devonshire. KG. PC. GCVO. FRS. JP. [1.1.2.1]
b. 31 May 1868 d. 6 May 1938
[ =>]
- 4 Victor Christian William Cavendish, 9th. Duke of Devonshire. KG. PC. GCVO. FRS. JP. [1.1.2.1]
- 3 Spencer Compton Cavendish, 8th. Duke of Devonshire. KG. GCVO. PC. [1.1.1]
- 2 William Cavendish, 7th. Duke of Devonshire. KG. PC. [1.1]
