Ocracoke Islander Dr. Frederic Ballard Westervelt Jr., 91, died April 16. He was the husband of Ernestine Meyer Henry Westervelt. Born June 11, 1931, at Walter Reed Army Hospital in Washington, D.C., he was a son of the late Dr. Frederic Ballard Westervelt of the U.S. Army Medical Corps and Elizabeth Ziegler Westervelt. He attended…