Commencing at a point where the boudary lines of Matilda, Mountain, South Gower and Edwardsburgh Townships meet, proceed West along the boundary line dividing South Gower and Edwardsburgh Townships to a point at the Northwestern extreme of Augusta Township: proceed south along the boundary line dividing the Townships of Elizabethtown and Augusta to a point on the St. Lawrence River denoting the territorial waters of Canada. Proceed east on this territorial line to a point where a projected boundary line between Matilda and Edwardsburgh Townships would intersect. Proceed North on this projected line and boundary to the point of origin. South Grenville shall enjoy all the territory therein defined.

This is from the ODMHA District 1 dated January 17, 1990.