Mount Pleasant has been separated from the old town of the same name, and erected into a distinct township ; a both having been formally included in the Manor of Philipsburgh. It is situated six miles north-west of the village of White Plains, distant thirty-three miles from New York, and one hundred and nineteen from Albany ; bounded north by Ossining and New Castle, and east by North Castle, south by Greenburgh, and west by Ossining and the Hudson River.

This tract of land must originally have formed a portion of the ancient domains of Weckguaskeck, as we find Weskora, Sachem of that place, and Ghoharius, his brother, (a chief residing here,) conjointly selling lands bordering the Pocanteco to Frederick Philipse, in the year 1 680.

Upon the district situated near the mouth of the Pocanteco River, (called by the English, Mill River,) the Indians conferred the name of Pockerhoe. Pocanteco, the Indian name for the beautiful Mill River, is clearly derived from the Algonguin, Pockohantes/ a term expressive of " a run between two hills." The local term Pockerhoe, also points to the same root for its origin.

Be this as it may, however, no signification could be more descriptive of the Weird stream, which pours its swift current through the foldings of a hundred hills. The Dutch styled it, the Sleepy haven Kill,' hence the origin of the present term Sleepy Hollow, as applied to the valley.

a Mount Pleascnt was originally organized on the 7th of March, 1798. Rec Stat. The present town on the With of May, 1S45. i The Indian name of the illustrious princess of Virginia. c Vau der Donck's, U. N. N.