The house on the left was maison Nicolas Daneau de Muy, or maison Bécancour, built in 1703. It belonged to James McGill from 1777 to 1808 <a rel="nofollow" class="external autonumber" href="http://www.biographi.ca/009004-119.01-e.php?BioId=36662">[1]</a>. It was demolished in 1903.
<bdi><a href="https://www.wikidata.org/wiki/Q46512247" class="extiw" title="d:Q46512247"><span title="Canadian painter and lithographer">James Duncan</span></a>
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Guy Pinard, <i>Montréal, son histoire, son architecture</i>, 1987-1997, via <a rel="nofollow" class="external free" href="https://www.flickr.com/photos/urbexplo/5583818851/">https://www.flickr.com/photos/urbexplo/5583818851/</a> and <a rel="nofollow" class="external text" href="http://www.everystockphoto.com/photo.php?imageId=10870962">Every Stock Photo</a>