Katherine O'Grady (1793-1829) (1793–1829) Parents Standish O'Grady, 1st Viscount Guillamore Katharine Waller Children Katherine Henrietta Persse Maria Persse Dudley Persse Siblings Waller O'Grady William O'Grady Maria O'Grady Richard O'Grady Standish O'Grady, 2nd Viscount Guillamore Thomas O'Grady James O'Grady John O'Grady Julia O'Grady Henrietta O'Grady Isabella O'Grady Partners Dudley Persse