Sonia,
Thank you for your additional information. I am surprised to read that Alexander had no known siblings. I have a copy of the headstone that he erected for his brothers and sister that is located in the Georgetown Presbyterian cemetery (Church of Scotland) in Howick, Quebec (just east of Montreal) . The headstone reads:
“In Memory of
Captain Samuel Murphy who was drowned at Quebec 1839 at 39 years.
Also of Davis Murphy who died November 15, 1849 Aged 39 years
Erected by their brother Alexander Murphy, Merchant of Montreal
Also of Margaret Lois Murphy died September 19,1868 aged 75 years.”
John, my 3rd great-grandfather and other sibling signed the burial certificate for both Davis and Margaret Lois. The certificate for Davis includes a reference to his being a native of Ireland from County of Antrim. He died June 14th, 1869 leaving behind his wife Christian McKenzie, from County Down, (married 1842), his sons Davis and John (my 2nd great-grandfather as well as his daughter Susan Christian.
I will try to send the pic of the tombstone if I can figure out how to do it. Once again, many thanks for your information. A distant cousin who is a direct descendant of Alexander will be delighted that I have connected with her distant cousin! The world is indeed small.