Lobo,
Welcome to the forums. A good place to start your information search is the
Internet Index of Lighthouse Links which is provided courtesdy of Harbour Lights and John. This is probably the best organized and presented list of links for things related to lighthouses you will find anywhere. Go to the state by state choice, choose Ohio and you will find 2 links to Turtle Island Light.
These links indicate it is on the Ohio-Michigan border and was replaced by the Toledo Light, so I would look in western Lake Erie, north of Toledo.
Dave