Agnivesa
Agnivesha is a legendary rishi, reputedly one of the earliest authors on ayurveda, based on Atreya's teachings is a lost text on Ayurveda, and was the foundational text of the Agnivesha school, i.e., one of the six schools of early Ayurveda.
The text is mentioned in the Charaka Samhita: "the tantra as written by Agnivesha is compiled, edited and modified by Charaka"
From some text reference of mahabharat, acharya Agnivesh is guru of acharya dronacharya
