Ferdinand St. John (1804-1865) (1804–1865) Parents Isabella Charlotte Antoinette Sophia Baronin von Hompesch George St John Children Frederick Robert St John John Henry St. John Charles Louis St. John Maurice William Ferdinand St. John Siblings Antonia St. John John Dyson St. John Charles Robert St. John George Richard St. John Isabella St. John George Fredrick St. John Henry Joseph St. John Henry St John, 4th Viscount Bolingbroke, 5th Baron St John Robert Barton George St. John Edward Barton George Barton Charles Barton Partners Selina Charlotte Keatinge