Ewart Chapel
John Ewart was the first president of the York Mechanics' Institute which became the Toronto Public Library. Born in Scotland in 1788, he became a contractor in the Town of York, building such noteworthy landmarks as the courthouse, parliament buildings, Osgoode Hall and St. Andrew's and St. Paul's Churches. He died in 1856, and was buried in Potter's Field, later being moved to Toronto Necropolis.
Ewart was a founding director of the Trustees of the York General Burying Grounds (1826), a non-sectarian organization now known as Toronto Trust Cemeteries. Mount Pleasant Cemetery is one of the properties it administers.
Plaque via Alan L. Brown's site Toronto Plaques. Full page here.