From Canada’s Historic Houses:
155 Euston Street is a Second Empire style, three storey, former town house located near what was traditionally referred to as Gallows Hill. The large building was constructed in 1875 for the manager of the Guardian newspaper and printer, Joseph William Mitchell (1836-1888) and his wife Barbara Rachel Ann Hooper (1847-1934). The designation encompasses the building’s exterior and parcel; it does not include the building’s interior.
And the Wright connection:
In 1875, the Mitchells’ hired local architect, Richard Weeks to design their home. William Wright was hired as the contractor to build the home that was described in the Semi Weekly Patriot newspaper as a neat, three-storey, brick cottage.