John St John, 11th Baron St John of Bletso English Baron (1650–1757) Parents Jane Blois Sir Andrew St. John, 2nd Bt. Children Barbara St John, Countess of Coventry John St John, 12th Baron St John of Bletso Ambrose St. John Henry St. John St Andrew St John Siblings Rowland St. John, 10th Baron Saint John of Bletso Sir St. Andrew St. John, 4th Bt. William St. John, 9th Baron Saint John of Bletso Sir St. Oliver St. John, 3rd Bt. A son St. John Partners Elizabeth St John