Genkō Era Biographies of Eminent Priests, The ［元亨釈書］ ( Genkō-shakusho): A work compiled by Kokan Shiren, a priest of the Rinzai Zen school of Japan, in the second year of the Genkō era (1321–1324) in the late Kamakura period. It contains the biographies of some four hundred eminent priests who lived during the seven hundred years or so following the introduction of Buddhism to Japan. It also contains chronological tables of Japanese Buddhist history from 540 to 1221.