Mrs. Grant, the former Mlle. Lilliane Helene Grinstead-Wood of Le Havre, France and Penarth, Wales and Capt. Grant were married Jan. 5, at Le Havre. Capt. Grant, who has been overseas 21 months, is director of operations and troop movements at Camp Philip Morris, near Le Havre. He is expected to arrive home the middle of June, and in September will return to Cornell University Law School.