There is an Alexander Dunlop, born 1818, who married Mary Jane Fraser, born 1829, that had a son Alexander Fraser Dunlop, born 24 May 1852 in Ontario Canada. Not sure if this is the one you are looking for but you are welcome to look through my family tree. My grandfather and I have done a lot of research with the help of some wonderful people over the years and have added a lot of history to our tree. It is under The Dunlop Family and my name is John Craig Dunlop. If there is any information that I have that I can share please let me know.