Yunyan Tansheng (Yun-yen T’an-sheng, Ungo Donjo), 781?-841. The Thirty-Seventh Ancestor. He is sometimes considered to be the reincarnation of Shanavasa. He became a monk when he was sixteen and began his twenty years of study with Baizhang soon after. He received Transmission from Yaoshan Weiyan. His Dharma-heir was Dongshan Liangjie. He appears in the Sayings and Doings of Dongshan (Dongshan yulu) sections 3-14, 48, 110-114. He appears in Blue Cliff Records 70, 72, 89 and in Records of Silence 49, 54. See Denkoroku Chapter 38.