Born London, his father, Sir Culling Smith, 2nd Baronet (1768–1829), was of Huguenot extraction and his mother, Charlotte Elizabeth (d. 15 Sept 1826) was the daughter of Sampson Eardley, 1st Baron Eardley, and hence the granddaughter of Jewish financier Sampson Gideon.
On 3 February 1757 he married Elizabeth Gideon, the daughter of Sir Sampson Gideon.
Gideon Welles | Sampson Air Force Base | Gideon Moi | Gideon | Gideon Orkar | Gideon Mantell | Gideon Koren | Angus Sampson | William Sampson | Sampson Mordan | Ralph Sampson | Gideon v. Wainwright | Gideon's Way | Gideon Force | Gideon Defoe | Gideon Coe | Deborah Sampson | Clarence Earl Gideon | Will Sampson | William Sampson (dramatist) | Todd Sampson | Sampson Low | Sampson Gideon | Sampson Eardley, 1st Baron Eardley | Robert J. Sampson | Richard Sampson | Ralph Allen Sampson | Marty Sampson | Gideon's Crossing | Gideon Macon |