Brahmayu
Brahmayu was a scholar and a natural philosopher in the ancient Mithila during the period of Gautam Buddha. According to Buddhism Scripture "Brahmayu Sutta", he was able to understand 32 marks of a great man. But unfortunately, there does not appear to be any clear connection to Vedic or Vedanta texts that would show this to be the case. More investigation is required to give evidence of the 32 marks as recorded as being sourced from Brahmanical or Vedic tradition. He was an eminent teacher of the Ancient Mithila University. He was master in three branches of the Vedas. He was well versed in cosmology. He also knew  philology and grammar. He is also known as Brahmin Buddhist. Dialogues between Brahmayu and Gautam Buddha 
There is a conversation between the Brahmin scholar Brahmayu and Gautam Buddha in the Buddhism text "Brahmayu Sutta". References 

Ancient Indian philosophers