Maria von Habsburg 
Margarita von Habsburg 
Elizabeth French Allin1 
From 14 July 1864, her married name became Trench.1
Children of Elizabeth French Allin and William Wallace Trench
- Frederick Herbert Trench+1 b. 12 Nov 1865, d. 11 Jun 1923
- Ethel Agnes Trench2 b. 1867, d. 18 Nov 1926
- Alicia Trench3 b. 1867, d. 1869
Thomas Allin1
Child of Thomas Allin
- Elizabeth French Allin+1 d. 16 Mar 1867
- [S8] BP1999 volume 1, page 127. See link for full details for this source. Hereinafter cited as. [S8]
Maria von Habsburg 
Fernando von Habsburg 
He was also known as Ferdinand von Habsburg.
Frederick Herbert Trench1 
Frederick Herbert Trench was born on 12 November 1865.1 He was the son of William Wallace Trench and Elizabeth French Allin.1 He married Lilian Isabel Fox, daughter of Robert Fox, on 15 July 1891.1 He died on 11 June 1923 at age 57.1
He graduated from Oxford University, Oxford, Oxfordshire, EnglandG, with a Master of Arts (M.A.)1 He was a Senior Examiner for the Board of Education.1
Children of Frederick Herbert Trench and Lilian Isabel Fox
- Waldo Trench Fox+1 b. 11 May 1892, d. 11 Mar 1954
- Desmond Patrick Trench+3 b. 14 Jul 1893, d. 5 Dec 1967
- Romola Trench3 b. 1895, d. 17 Jun 1930
- Avice Blanaid Trench3 b. 1898
- Maeve Trench3 b. 1899, d. 20 Dec 1963
Lilian Isabel Fox1 
From 15 July 1891, her married name became Trench.1
Children of Lilian Isabel Fox and Frederick Herbert Trench
- Waldo Trench Fox+1 b. 11 May 1892, d. 11 Mar 1954
- Desmond Patrick Trench+2 b. 14 Jul 1893, d. 5 Dec 1967
- Romola Trench2 b. 1895, d. 17 Jun 1930
- Avice Blanaid Trench2 b. 1898
- Maeve Trench2 b. 1899, d. 20 Dec 1963
Ferdinand von Habsburg 
Robert Fox1
Child of Robert Fox
- Lilian Isabel Fox+1 b. c 1869, d. 20 Apr 1961
- [S8] BP1999 volume 1, page 127. See link for full details for this source. Hereinafter cited as. [S8]
