Isabelle Archer1 
From 1880, her married name became Trench.1
Children of Isabelle Archer and Charles Stewart Le Poer Trench
- Charles Stewart John Trench+1 b. 1880
- Isabelle Beatrice Power Trench1 b. 1882
- William Augustus Trench1 b. 1884, d. 1888
- Archer Robert Robinson Trench+1 b. 1886, d. 1918
- Edmund Victor Power Trench1 b. 1887, d. 1888
- Dorothy Trench1 b. 1889, d. 1890
- Gladys Trench1 b. 1891
- Stewart Power Trench1 b. 1894
Charles Stewart John Trench1 
Children of Charles Stewart John Trench and Helen Dulcie Gardiner
- Charles Stewart Trench1 b. 1916
- John Patrick Trench1 b. 1917
- Helen Jean Trench1 b. 1919
Helen Dulcie Gardiner1
From 1915, her married name became Trench.1
Children of Helen Dulcie Gardiner and Charles Stewart John Trench
- Charles Stewart Trench1 b. 1916
- John Patrick Trench1 b. 1917
- Helen Jean Trench1 b. 1919
Charles Stewart Trench1
John Patrick Trench1
Helen Jean Trench1
William Augustus Trench1 
Archer Robert Robinson Trench1 
Children of Archer Robert Robinson Trench and Adelaide Caroline Gostenhofer
- Archer William Power Trench1 b. 1914
- Stewart Kelson Trench1 b. 1916
- Laura Macdonald Trench1 b. 1918
Adelaide Caroline Gostenhofer1
From 1913, her married name became Trench.1
Children of Adelaide Caroline Gostenhofer and Archer Robert Robinson Trench
- Archer William Power Trench1 b. 1914
- Stewart Kelson Trench1 b. 1916
- Laura Macdonald Trench1 b. 1918
Archer William Power Trench1
