The Yang Derun 杨德闰
Paul PengYang Derun lived during the Zhiyuan era of the Yuan Dynasty.
He was bestowed the title of "Great Master Guangshan" (Great Master of Extensive Benevolence) and held the position of "Daopan" (Assistant Chief Taoist Administrator) of Dadu Circuit (Dadu, present-day Beijing, was the capital of the Yuan Dynasty).
Additionally, he served as a "Dafashi" (Grand Dharma Master) of the Zhen dadao School (True Great Dao School, a major Taoist school in the Yuan Dynasty).
