William Chetwynd, 3rd Viscount Chetwynd English politician and Irish peer (1684–1770) Parents Lucy Roane John Chetwynd Children William Chetwynd Mary Chetwynd John Chetwynd Siblings John Chetwynd, 2nd Viscount Chetwynd Walter Chetwynd, 1st Viscount Chetwynd Lucy Chetwynd