Upon the 25 th day of February, 1701, Robert Walters and his associates purchased of the native Indian Proprietors, Catonah, Wakemane and Weewanessege, a certain tract of land in the County of Westchester, bounded to the south by the East Division line between the province of New York and the colony of Connecticut ; and on the east by the other Division Line, and so along the said line until it meet with the Patent of Adolph Philips ; and so along his Southern Boundaries till it meet the Patent of the Manor of Cortlandt, and from thence by a Line that shall run upon a direct Course until it meet with the end of the first Easterly Line of twenty Miles of the said Manor of Cortlandt ; and from thence along the said Line Westerly until it meet with the Patent granted to Robert Walter and others; then southerly along the said Patent, until it meet with the Bounds of the Township of Bedford, and thence along the said Bounds till it meet with the Patent granted to Col. Caleb Heathcote and others ; and along the bounds of the said Patent unto the Colony line;" "as also a small Tract of Land beginning Westerly at a great Rock on the Westermost side at the Southermost End of a Ridge known by the name of Ruhbel or Horse Ridge ; and from thence North- West and by North to Bronckx River, Easterly, beginning at a marked Tree at the Eastermost side on the Southermost end of the said Ridge ; and thence North to Bronckx River; which Tract of Land was by the said Caleb Heathcote purchased of the native Indian Proprietors ; the said two Tracts containing by Estimation about 62,000 acres of profitable land."