Frederick St John officer of the British Army and politician (1765-1844) (1765–1844) Parents Diana Beauclerk Frederick St John, 2nd Viscount Bolingbroke Children Welbore William Oliver St. John Louisa Diana St. John Charles William George St John Henry George St. John George William St. John Robert William St. John George Frederick Berkeley St. John Elizabeth St. John Maria Arabella St. John Siblings Mary Day Beauclerk George St John Elizabeth Beauclerk Charles Beauclerk Anne Beauclerk Arthur St. John Partners Lady Mary Kerr Arabella Craven Caroline Parsons