We are all accustomed to seeing boldface names associated with the South Fork: Alec, Jimmy, Gwyneth, Sir Paul, et al. Yet, there is something fresh and pulse-quickening about the faces and names of a different century: Pablo, Jean, Cole, Man Ray, Ernest, Scott, and Zelda lighting up the current exhibition “Living Well Is the Best Revenge: A Jazz Age Fable of Sara and Gerald Murphy” at Clinton Academy in East Hampton.