Rudolf Frederick Haffenreffer, III (1902-1991), the eldest son of Rudolph Haffenreffer, Jr., succeeded to his father’s positions in several family ventures. Rudolph, III graduated from Dartmouth College (where he was an active alumnus) and Harvard School of Business Administration. He served as president of Narragansett Brewery and the Herreshoff Manufacturing Company which the Haffenreffer family acquired in 1930. The Haffenreffers owned the Mount Hope Bridge for two decades, and Rudolf, III remained as general manager of that facility even after the state bought it from the family in 1955. With his wife Virginia and his brother Carl, he donated much of the family’s Mount Hope estate to Brown University.
Rudolph was a humanitarian and philanthropist who supported a number of charities and organizations, including the Narragansett Council, Boy Scouts of America, St. Paul’s Evangelical Lutheran Church in Providence, and the United Way of Southeastern New England. He was very active in Bristol’s civic life and resided in the stately Governor Bradford House on Metacom Avenue until his death in 1991 at age eighty-eight.