N.Y. Estates, Powers & Trusts Law § 5-1.2
(a) A husband or wife is a surviving spouse within the meaning, and for the purposes of 4-1.1, 5-1.1, 5-1.1-A, 5-1.3, 5-3.1 and 5-4.4, unless it is established satisfactorily to the court having jurisdiction of the action or proceeding that: