William Bernard 12Th Baron Petre
1817 - 1884 (66 years)(
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- 1 William Bernard 12Th Baron Petre [1] b. 20 Dec 1817 d. 4 Jul 1884
- Mary Teresa (of Irnham) Clifford b. 1 Sep 1823 d. 31 Dec 1895
- 2 Frances (Hon) Mary Petre [1.1] d. 25 May 1920
- George Arthur Hastings (7Th Earl) Forbes b. 5 Aug 1833 d. 25 Aug 1889
- 3 Bernard Arthur William P. Hastings (8Th) Forbes [1.1.1] b. 17 Sep 1874 d. 10 Sep 1948
- Beatrice Mills
- 4 Moira Mary Forbes [1.1.1.1] b. 19 Feb 1910
- 4 Eileen Beatrice Forbes [1.1.1.2] b. 1 Jul 1912
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- 4 Arthur Patrick Hastings (9Th Earl) Forbes [1.1.1.3] b. 10 Apr 1915
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- 4 John Forbes [1.1.1.4]
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- 4 Moira Mary Forbes [1.1.1.1]
- 3 Fergus Reginald George Forbes [1.1.2] b. 20 Jan 1876 d. 18 Feb 1876
- 3 Reginald George Benedict Forbes [1.1.3] b. 25 Jun 1877 d. 28 May 1908
- 3 Donald Alexander Forbes [1.1.4] b. 3 Sep 1880 d. 2 Aug 1938
- Mary Doreen Lawson
- 4 Rosaleen Frances Forbes [1.1.4.1] b. 7 Jun 1919 d. Yes, date unknown
- 4 Penelope Forbes [1.1.4.2]
- 4 Rosaleen Frances Forbes [1.1.4.1]
- 3 Bertram Aloysius Forbes [1.1.5] b. 26 May 1882 d. 5 Aug 1960
- 3 Fergus George Arthur Forbes [1.1.6] b. 26 May 1882 d. 23 Aug 1914
- 3 Eva Mary Margaret Forbes [1.1.7] b. 26 May 1882 d. 1968
- 3 Margaret Mary Theresa Forbes [1.1.8] d. 19 May 1965
- + George (Hon) Savile d. 15 Jul 1937
- + George (Hon) Savile d. 15 Jul 1937
- 3 Bernard Arthur William P. Hastings (8Th) Forbes [1.1.1]
- 2 William Joseph 13Th Baron Petre [1.2] b. 26 Feb 1847 d. Yes, date unknown
- 2 Frances (Hon) Mary Petre [1.1]