Frederick Robert Le Poer Trench British Royal Navy officer (1808-1867) (1808–1867) Parents Henrietta Margaret Staples Richard Trench, 2nd Earl of Clancarty Children Richard Le Poer Trench Siblings Lady Lucy Le Poer Trench Lady Frances Power Le Poer Trench William Trench, 3rd Earl of Clancarty Richard John Le Poer Trench Lady Louisa Augusta Anne Le Poer Trench Lady Emily Trench Harriet Kavanagh unknown daughter Le Poer Trench Partners Catherine Maria Thompson