ISAR or Isvar, a Gorakhpanthi yogi, who according to Miharbdn Janam Sdkhl, met Guru Nanak at Sumer mountain in company with a group of Nath ascetics and engaged in a discourse with him. Bhai Gurdas, Varan, I. 39, mentions Achal Vatala, outside of Batala, in present day Gurdaspur district