You could take a peek at the British Columbia Vital Statistics site http://www.bcarchives.gov.bc.ca/textual/governmt/vstats/v_ev...
or this one http://aabc.bc.ca/aabc/bcguid9.html
if you have any idea of where in BC your family might have emigrated to.
BC was and still is a LONG way from Ontario. Any ideas of what might have brought one of your Tarves this far west?