Richard I. Mark of East Hollow Road, East Hampton, and New York City died at home in Manhattan on Dec. 17 of congestive heart failure. He was 80.
Mr. Mark had been a tax lawyer and partner, first at KPMG and later at First Manhattan Company, an investment advisory firm, both in New York City.
He was born in Brooklyn on Nov. 21, 1932, to Alexander Mark and the former Sonia Zadanoff, and grew up in Woodridge, N.Y. He graduated from Syracuse University and Harvard Law School, passing the New York bar examination and also becoming a certified public accountant.