Patanjali and tiger-footed Vyagrapada worshiping Shiva
He being the Gothra rishi of Janamejaya pushes the time of the rishi to a far antiquity. The connection with this rishi can be seen in 2 instances as far as I know. Upamanyu was the son of Vyagrapada whom Krishna goes to meet to get deeksha. This is described in Mahabharata -13-15 &17 . It is possible to assume that the Pandavas followed Krishna and got deeksha from Upamanyu and therefore came to belong to Vygrapada Gothra. Upamanyu’s name is also associated with the Kedarnath temple for which Janamejaya made the gift. Like this the authenticity of the inscriptions can be checked with events connected with the Pandavas.