Treaty of Hartford (1650)

In 1650, Dutch Director-General of New Netherland Petrus Stuyvesant went to Hartford to negotiate a border with the governor of English Connecticut colony Edward Hopkins.

The Dutch colony of New Netherland was feeling increased pressure from the rising number of English colonists at its borders.

On Long Island, a line would be drawn south from the westernmost point of Oyster Bay, through modern Nassau County.

The exploding population of New England, and the splintering impulses of its religious-based colonies, had led to significant English settlement in the Connecticut River Valley, along the coast of Long Island Sound and on eastern Long Island.

Indeed, the borders today between Connecticut and New York, and between Nassau and Suffolk Counties on Long Island, are, with some minor adjustments, those negotiated in 1650.