First Town Meeting 1790
Near this site on April 5, 1790, was held the earliest known session of a municipal government in what is now Ontario. This 'town meeting' of Township No. 6, later named Grimsby, dealt with such matters as the height of fences and the registration of livestock marks. While magistrates, appointed by the Crown, still exercised the more important functions of municipal administration, this marked a beginning of local self-government by elected representatives of the people.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.