The graves of four people were discovered while demolishing St John The Evangelist, according to InsideToronto.
Martin Proctor, a local folklorist and community hero, has a long discussion on a Weston Facebook page. He says the graves
would have been from the old St. John the Evangelist Church cemetery…. burials were still taking place at least as late as the early 1890s….
Thanks to Anon for the tip.