St Andrew St John British priest (1732–1795) Parents Elizabeth St John John St John, 11th Baron St John of Bletso Children St. Andrew St. John Ambrose St. John Thomas St. John John Francis Seymour St. John Henry St. John Sarah St. John Siblings Barbara Coventry, Countess of Coventry Ambrose St. John Henry St. John John St John, 12th Baron St John of Bletso Partners Sarah Chase