Ann Richbell of the entire estate and rights in her Mamaroneck and Scarsdale lands, in 1697, Colonel Heathcole was residing at Westchester, which the year before, through his influence, had been created a Borough- Town, with all its municipal privileges of a Mayor and Aldermen and Assistants, and the additional one of a representative of its own in the Assembly of the Province,' its charter, by which he was named its first Mayor, bearing date April 16th, 1696. He was a merchant in New York, where he also had a town residence, and a member of the Council of the Province. He had been a property holder in both Westchester and Eastcliester, from about the time of his coming from England to New York, which was in 1691. Being a man of education and means and of affable manners, he took a prominent part in the affairs of both settlements, and, in accordance with the popular wish, Avas appointed Colonel of the Military of the whole County. Hence the title of " Colonel," by which he was ever afterwards known, and spoken of, notwithstanding the many higher and more distinguished positions and appointments he afterwards held, one of which was the judgeship of Common Pleas of the County, which he filled at the same time he was colonel of its militia.

Succeeding to all the Richbell estate in the East Neck, including the proprietaiy rights in the township tract of Mamaroneck, after obtaining the Indian confirmations and other deeds for the lands, and acquiring those from the head of Hutchinson's River to the Bronx, he had the whole erected into the Manor of Scarsdale under the Manor Grant above set forth in 1701.