Kavi called Vyasayogicharita and inscriptional evidence. Songs of Purandara Dasa and traditional stories yield important insights too. Though Vyasayogicharita is a hagiography, unlike other works in the genre, it is free of embellishments such as performance of miracles and some of its claims can be corroborated with inscriptional evidence. Somanatha mentions at the end of the text that the biography was approved by Vyasatirtha himself, implying the contemporary nature of the work. While some scholars attest the veracity of the text to the claim that Somanatha was a Smartha hence free of sectarian bias, others question the claim citing a lack of evidence. Context The philosophy of Dvaita or Tattvavada was an obscure movement within Vedanta in medieval India. Philosophically, its tenets stood in direct opposition to Advaita in that its progenitor, Madhva, postulated that the self (Atman) and god (Brahman) are distinct and that the world is real. As Advaita was the prevailing sub-sect of Vedanta at the time, the works of Madhva and his followers came under significant attack and ridicule. Madhva deployed his disciples to promulgate the philosophy across the country, which led to the establishment of a small and diffuse network of mathas, or centres of worship, across the subcontinent. The early years of Dvaita were spent spreading its basic tenets including participating in debates with the Advaita scholars. Philosophical improvements were pioneered by Padmanabha Tirtha and subsequently perfected by Jayatirtha. Dasgupta contends that the latter's contributions brought Dvaita up to the standards of intellectual sophistication set by Advaita and Visistadvaita. By imbuing the nascent philosophy with structure and expanding upon Madhva's terse texts, he reinforced the intellectual position of Madhva and set the standard for Dvaita literature through his seminal work, Nyaya Sudha ('Nectar of Logic'). Subsequent authors such as Vishnudasacharya further expanded upon these texts and authored commentaries branching into diverse fields such as Mimamsa and Navya Nyaya, a tradition which would continue for centuries. Despite the intellectual growth, due to the turbulent political atmosphere of India at the time, penetration of Dvaita into the cultural collective of the subcontinent was limited. It was not until Sripadaraja, the pontiff of the matha at Abbur, who aligned himself with the Vijaynagara king Saluva Narasimha Deva Raya and served as his guru, that Dvaita would receive royal encouragement and a certain degree of power. But the Smartha Brahmins, adhering to the principles of Advaita, and Sri