Vanavar: Mythological Legend - history and mythology, #1

This book is an attempt to compile the mythological narrative of the Siddhnath Temple at Vanwar. It is also a story of the conflict between Vaishnavism and Shaivism. Shiva is in battle with Asuras and fights against Shri Krishna. This symbolizes the un-Aryanization of Shiva. The story of giving sonship to the demon Bamasur increased his popularity among the majority of the indigenous people. It is possible that due to the emergence of Buddhist and other contemporary religions, the popularity of Sanatan religion in the Indian subcontinent has declined in the majority.
Then the Brahmins incorporated such stories into Purana to bring back the Bahujan deprived group through Shiva