Canadian records are organised by province, so it depends where and when. If this is the George Alton Cherry who was a doctor in 1891, you might have some luck looking at the Medical Directory/Medical Register as he should be listed in these for the years he was in the UK practicing medicine - usually names qualifications etc. The Guildhall library has a full set of these, other large libraries will probably also:
http://www.history.ac.uk/gh/apoths.htmA lot of provinces didn't start recording births (as in civil records; there are church records before these dates) until relatively late (Ontario, 1869, for example, New Brunswick officially 1888 although some 'late' births were registered 1888 and after for people born as far back as the turn of the century.)
