Sackville married Lady Georgiana Sarah Ponsonby on 6 Jun 1839. Georgiana (daughter of John William Ponsonby, 4th. Earl of Bessborough and Lady Maria Fane) was born on 14 Aug 1807; was christened on 8 Sep 1807 in St. George's, Hanover Sq. Middlesex, England; died on 25 Jun 1861. [Group Sheet]