If you know the town but not the township or county try theĀ Ontario Locator website, linked to below.
Resources
Books
Kingston, Frontenac, Lennox & Addington Ancestors: A Guide To Family History Research
This is the definitive guide to print, microfilm and other family history research sources for Kingston, Frontenac County, and Lennox & Addington County.
Databases
Ontario Locator
Locate Ontario place names for your genealogical or historical research.