Here is a link to a rather long obituary for Wm Eugene BLACKSTONE who died 1935 in the US. In this treatise is a mention of a long time friend, John CRERAR, nothing about his life, but a mention of his memorial window : ..."He paid for a memorial window to John Crerar, who was one of his close friends, at the Second Presbyterian Church in Chicago. (Crerar Memorial Window. Chicago Inter Ocean, Oct. 1, 1893.)"... The full obituary is at this URL in the "Family History & Genealogy Message Board" though nothing further is given about Mr. CRERAR. http://boards.rootsweb.com/topics.obits2/24002/mb.ashx Meg Greenwood =====================