http://www.cmaj.ca/contents-by-date.0.shtml This link is an archive of the Canadian Medical Journal. My suspicion is that "Jock"'s parents or his father, disowned him and never bothered to report him missing or look for him. The father is most likely deceased now and has been for some years. "Jock" might have been an only child which explains why no siblings have been looking for him. Still, I don't understand why no one has tried to look for "Jane". Here is my theory: "Jock" was in FL and SC in August 1976. Had he been a schoolteacher, he would have been on summer vacation at this time. It would seem to make sense that he would be vacating in Florida and South Carolina. This was also the year of the bicentennial. Now, was he a legal citizen of the US? Or was he a Canadian passing through with his female companion? He could have been a native of Canada and a legal US citizen. If he was a teacher in Canada and was visiting America, maybe one of the schools in Canada has records of a Jacques who taught in the 1960s or 1970s. There might even be a picture of him.