The sitter was the second son of Colonel Donald Campbell of Saddell Castle, Argyllshire (for whom see lot 49), and Anne, daughter of John Campbell of Barbreck. A 'Charles Campbell', who is presumably identifiable with the sitter, was commissioned into the Royal Scots regiment in January 1779. The sitter was promoted to the rank of Lieutenant in the 74th Regiment of Foot in the East Indies in December 1787, and died without issue at Madras in October 1790. His gravestone in St. Mary's Cemetery, Madras, dated 24 October 1790, is inscribed: 'Lieut. Charles Campbell, of the 74th Regiment, second son of Colonel Donald Campbell of Glensaddel, aged 23 years. A most amiable and elegant young man'.