Headstone photos are online here:http://geneofun.on.ca/cems/ON/ONHUR11512/T
I think it is very possible that it is the same couple. The older grey stone shows John TAYLOR dying
*31* Sep 1878. The lettering looks chalked for the photo, so it's likely the dates were illegible. The family may have added them later to the larger red granite family monument and guessed at the dates and ages.
Note - when there is no year of birth shown, it is estimated from date of death and the age given.
red granite (check other names on this)http://geneofun.on.ca/names/photo/335441