Wikipedia
Bhadrabahu
Bhadrabahu was the last Shrut Kevali (all knowing by hearsay, that is indirectly) in Jainism. He was a Digambara Acharya and the spiritual teacher of Chandragupta Maurya.
There were five Shruta Kevalis in Jainism - Govarddhana Mahamuni, Vishnu, Nandimitra, Aparajita and Bhadrabahu.