It was named after William Hamilton Merritt, a prominent local entrepreneur and founder of the Welland Canal Company.
[1] Prior to amalgamation which saw the original city of St. Catharines absorb several satellite towns, Merritton was a separate entity (along with Port Dalhousie).
Among them are the Merritton Tunnel (under the third Welland Canal), remnants of the three previous Welland Canals and several early industrial ruins including the former Independent Rubber Company / Merritton Cotton Mills Annex and the old Lybster Mill building, which was built in 1860.
The area has undergone a major infrastructure facelift involving the re-alignment of Glendale Avenue, the replacement of the Merritt Street Bridge.
Merritton is also experiencing a significant increase in residential construction, especially on property designated as brownfield by the city.