My name is Jeannie. My father had a daughter with another woman between 1972-1976. This woman contacted my mother a number of years ago. If you are this woman please contact me! My father was a travelling salesman. He lived in the Kitchener Waterloo and Cambridge area in Ontario. He would have been in his early 20's at the time.
The picture below is of John Haggerty around the time of your birth.