Mary Foulis (1826-1891) (1826–1891) Parents Mary Jane Ross Sir William Foulis of Ingleby, 8th Bt. Children William Sidney, 5th Baron De L'Isle and Dudley of Penshurst Henry Sidney Algernon Sidney, 4th Baron De L'Isle and Dudley of Penshurst Mary Sophia Sidney Philip Sidney, 3rd Baron De L'Isle and Dudley of Penshurst Partners Philip Sidney, 2nd Baron de Lisle and Dudley