Willie B. was a Western lowland gorilla who lived at Zoo Atlanta for 39 years, from 1961 until his death on February 2, 2000. He was named after the former mayor of Atlanta, William Berry Hartsfield. Willie B. was kept in isolation for 27 years with only a television and a tire swing to keep him company. In 1988, he was moved to an outside exhibit and allowed to socialize and raise a family. He then embraced his role as silverback and leader of a troop.