The history of land allocation in Ontario is very complex. As a result the records are difficult to deal with. There are two big groups of land records. The first deals with the transfer of land from the crown to an individual or company. The document that did this is called a Patent and so these are patent records. Patent records were created by the colonial or provincial government but there were many different processes and governmental structures over time and each tended to keep records differently. As a result the records are complex to search.
The second group deals with the transfer of land between individuals or companies. These records were held by the District or County. When Ontario changed its method of land registry the old records were essentially thrown out. Most, but not all, were rescued and ended up in archives or libraries.
Land records are not an easy subject to research. This excellent resource is available through the OGS e-Store: