Aryadeva
Aryadeva (Skt. Āryadeva; Tib. Pakpa Lha; Wyl. ‘phags pa lha) - One of the six great commentators (the ‘Six Ornaments’) on the Buddha's teachings. He was a disciple of Nagarjuna and devoted his life to continuing his master’s work, consolidating the Madhyamika tradition. He is the author of the Four Hundred Verses. He is also counted among the eighty-four mahasiddhas.