 He was appointed Honorary Colonel of the 1st (Exeter and South Devon) Devonshire Rifle Volunteer Corps on 2 June 1877.In 1830 Lord Devon married Lady Elizabeth Fortescue (d. 27 January 1867), daughter of Hugh Fortescue, 1st Earl Fortescue.Her tomb-chest with full-length recumbent alabaster effigy by Edward Bowring Stephens is situated in St Clement's Church, Powderham, against the east wall of the south transept, with a plaster-cast in the chapel attached to Powderham Castle, in an ogee arched alcove in the north wall of the chancel.