William Sidney, 5th Baron De L'Isle and Dudley of Penshurst (1859-1945) (1859–1945) Parents Philip Sidney, 2nd Baron de Lisle and Dudley Mary Foulis Children Mary Sidney William Sidney, 1st Viscount De L'Isle Siblings Mary Sophia Sidney Algernon Sidney, 4th Baron De L'Isle and Dudley of Penshurst Philip Sidney, 3rd Baron De L'Isle and Dudley of Penshurst Henry Sidney Partners Winifred Bevan