His father was posted from England to Canada in 1792 , attached to the Queen 's Rangers .
Was afterwards the Chief Medical Officer of Canada   , under the patronage of his friend John Graves Simcoe , the first Lieutenant Governor of Canada   .
His father was posted from England to Canada in 1792 , attached to the Queen 's Rangers , and was afterwards the Chief Medical Officer of Upper Canada , under the patronage of his friend John Graves Simcoe , the first Lieutenant Governor of Upper Canada .