A Fairfield County businessman has become the new financial backer for the tribe of North Stonington. It announced April 17 it had reached agreement with David A. Rosow in its bid for formal recognition from the federal government. Rosow is former chairman and chief executive officer of the Stratton Mountain ski resort in Vermont and the chairman and CEO of International Golf Group, which operates courses in Connecticut, Rhode Island and New York. Rosow is also a director of the Hudson United Bancorp, a $10 billion bank holding company with headquarters in New Jersey. Rosow has lived in Connecticut for 30 years and keeps an office in Fairfield. Rosow replaces Abraham Gossman, a multimillionaire developer of nursing homes, as the tribe's financial backer. Rosow's relationship with the Easterns will be similar to that of casino owner and developer Donald Trump and the Paucatuck Eastern Pequots. The Paucatucks, who share a Lantern Hill reservation with the Easterns, reportedly enlisted Trump as their financial backer in 1996. Last month, the BIA granted preliminary recognition to both tribes which are expected to seek gaming compacts with the state if they receive formal recognition. The BIA is in a 180-day period during which interested parties may comment on the applications.