Tryon County was a county in the colonial Province of New York in the British American colonies. It was created from Albany County on March 24, 1772, and was named for William Tryon, the last provincial governor of New York. The county's boundaries extended much further than any current county. Its eastern boundary ran "from the Mohawk River to the Canada line, at a point near the old village of St. Regis and passing south to the Mohawk between Schenectady and Albany." It extended north to the St. Lawrence River and west to Lake Ontario and Lake Erie, though practically, its western boundary was vague, with no explorers venturing very far west at that time and several other colonies (Pennsylvania, Massachusetts and Connecticut) also laying claim to what today is known as western New York.