The Rev. William “Bill” Wright Rankin, a longtime rector at St. Stephen’s Episcopal Church who helped implement health-care programs in resource-deprived regions in Africa as cofounder of nonprofit GAIA Global Health, died July 22 at his Tiburon home of chronic respiratory disease. He was 80. Born Oct. 10, 1941, in Schenectady, N.Y., to Dorothy and Gordon Rankin, the Rev. Rankin was raised outside Syracuse and attended The Manlius School, a military boarding school. He received a bachelor’s in h