 He was invested as a Knight of the Order of St. John in 1975.Married in 1964 to Iona Mary Colquhoun, daughter of Sir Ivar Colquhoun, 8th Baronet, the couple had a son Torquhil Ian Campbell, 13th Duke of Argyll and a daughter Lady Louise Iona Campbell, now Lady Louise Burrell.They lived at Inveraray Castle in Argyll.