William Cosby Trench (1869-1944) (1869–1944) Parents Lady Anne Le Poer Trench Frederic Trench Children Alan Walter Oliver Trench Algernon Oliver Trench Walter Frederick Oliver Trench Percy Richard Oliver Trench un-named Oliver Trench unknown Trench Siblings Sarah May Trench Sydney Trench Frederick Trench, 3rd Baron Ashtown Charlotte Anne Trench Partners Frances Elizabeth Shawe-Taylor