The Marquess of Bute, The Earl of Oxford, The Earl of Dalhousie, The Earl of Eldon, The Earl of Lytton, Earl Peel, Lord Carbery, Lord Clifford of Chudleigh, Lord Fellowes of West Stafford, Lord Hesketh, Lord Killanin, Lord Tugendhat and Lord Walker of Gestingthorpe all went to Ampleforth or Downside. So they presumably are, or at least have been, Catholics.