May 28, 1949 – April 6, 1998(RIP)
She stated that she is a vegetarian in an interview on British Magazine back in 80's. Here's a brief article from wikipedia that backs up the interview:
Despite her reputation as a fearsome performer, Williams in her personal life was deeply devoted to the welfare of animals, a passion that included a vegetarian diet, working as a wildlife rehabilitator and being a natural foods activist. In one TV talk show appearance on KPIX's The Morning Show, she openly accused Debbi Fields (of "Mrs. Fields" cookie fame) of being "no better than a heroin pusher" for using so much processed white sugar in her products.