Chan Buddhism flourished during China's Tang (618-907) and Song (960-1279) dynasties. As it proliferated, there was also a significant increase in the number of Chan masters. Previous versions of the history of Chan Buddhism reveal that a considerable volume of hagiography was compiled in order to provide information on venerated teachers or masters. Chan masters were classified according to Chan's Five Schools and Seven Sects(五家七宗), and relevant information presented in tabular form such as specific genealogical or lineage chatis. However, mistakes were sometimes made due to the complexity of the dharma name and honorifìc title system of Chan Buddhism, and the fact that Chan masters, in addition to their dhanna names, also had many other given names and titles, often quite similar. This means that a successful compiler of Chan genealogical tables or lineage charts must be careful when reading the texts to distinguish between different personages without so lely re lying on name or title similarity as a unique identifier. The new edition of the Zengaku Daijilen 禪學大辭典， published by Komazawa University in 1985 , is an authoritative reference for Chan studies. However its Chan Lineage Chart 禪宗法系譜， an appendix to the third volume, should be verified in the light of newly-found data and recently published research, and so this paper re-examines Chan Buddhist lineages and the names of Chan masters. After collating hagiographical information, the Lamp Transmission Records and the Dunhuang manuscripts with the Chan Lineage Chart in the new edition of the Zengaku Daυ iten ， this study amends the chart by adding five and deleting seven Chan masters and making forty-three further revisions and/or corrections to its lineage ordering.
