Mentioned by Sharpe, W.E.(1908) p.13 as one of the 'students and collectors of Coleoptera belonging perhaps to a somewhat different social order [ie. not working class]... happily still surviving'. Sharp notes that Constantine retained his own collection at this time. He is listed in Ent. Ann., 1857, at 7 St. Andrew Sreet, Blackburn, Lancashire. (MD 3/02)