Fa-tsu ［法祖］ (n.d.) (PY Fazu;  Hōso): Also known as Po-yüan or Po Fa-tsu. A priest and a translator of Buddhist texts during the late Western Chin dynasty (265–316) in China. He built a Buddhist monastery at Ch’ang-an, where he translated and lectured on Buddhist scriptures. In 305 he set out for Lung-yu, where he intended to live in retirement. He was killed along the way, however, because of his refusal to work for Chang Fu, the local governor of Ch’in-chou, and also because of accusations lodged by someone he had defeated in debate. The Buddha’s Parinirvāna Sutra, one of the Hinayana versions of the Nirvana Sutra, was translated by Fa-tsu.