September 9 â The second of the Robinson Treaties, the Robinson-Huron Treaty, is signed between Robinson and the Ojibwe chiefs of Lake Huron. The Lake Huron chiefs, led by Shingwaukonse, are more resistant to the signing of the treaty as they are more familiar with the treaty system and are more threatened by encroachment from Europeans, as well as having tense relations with the Canada West government following the Mica Bay Incident.
In the United States, the Fugitive Slave Act is passed. It provides that even free persons can be made a slave if suspected of being a runaway. As a result, more fugitive slaves and free Black persons come to Canada.
The site of John By's headquarters during the construction of the Rideau Canal is incorporated as Bytown.