Paul Joseph Champagne, who retired to Plymouth after more than 50 years at the Harvard Cooperative Society, died peacefully June 23, after a long illness. Born in Dorchester, MA on Feb, 28, 1947 to the late Anna (O’Callahan) and Edward L. Champagne, he was raised in Brighton along with his late brother Edward F. They moved to Watertown, MA when Paul was in elementary school. He graduated from St. Patrick’s High School in 1964, and continued h…