"1825-01-11" . "Isaac Newton Wallop, 5th Earl of Portsmouth" . . "Earl of Portsmouth" . "1891" . "Isaac Newton Fellowes (later Wallop), 5th Earl of Portsmouth" . . . . . . . . . . . . "1891-10-04" . . . . "Isaac Newton Wallop, 5th Earl of Portsmouth" . "Isaac Newton Wallop" . . . . . "1825" . "5th Earl of Portsmouth" .