It was the only non-subsidiary title at the rank of Marquess in the English Jacobite Peerage , before becoming a subsidiary of the Duke of Tyrconnell .
The Marquess of Trelissick ( also called Marquis of Trelessick ) is a title in the Jacobite Peerage of England .
It was the only non-subsidiary title at the rank of Marquess of Trelissick in the English Jacobite Peerage , before becoming a subsidiary of the Duke of Tyrconnell .
The Marquess of Trelissick ( also called Marquis of Trelessick ) is a title in the Jacobite Peerage of England .