N.Y. Real Property Law § 260: Lands adversely held may be conveyed or mortgaged

§ 260. Lands adversely held may be conveyed or mortgaged. No grant,

conveyance or mortgage of real property or interest therein shall be

void for the reason that at the time of the delivery thereof such real

property is in the actual possession of a person claiming under a title

adverse to that of the grantor.