I am looking for information on my ancestor Archibald Alexander Riddel. He was born December 10, 1819 in Aberdeen(shire?), married Anne Devlin in December 1842 (in Toronto, Ontario) and died on December 15, 1883 in Toronto, Ontario. His parents were John Riddel and Margaret Cochrane. He was a physician in Toronto and for a couple of years practiced medicine in Mexico.
Any information on his parents (and further back) and his life in Scotland (and in Canada) would be great.