Colin Minto Campbell was a pottery manufacturer and M.P. for Woodseat, Rocester and Ashbourne in Staffordshire. He was the son of John Campbell of Liverpool.
Campbell was elected Conservative MP for Staffordshire North in 1874. He was the principal partner in Messrs Minton of Stoke-on-Trent. He may have known JW in the mid-seventies, when his name appears in an address book (#12714).
Ridgway, Companion to the Calendars for the Year, London, 1875; Annual Register, London, 1885, p. 146.