and the name of his mother is unclear, although many sources variously claim it as Satyavati and Vedavati. Born in a Tulu-speaking Brahmin household, he was named Vāsudeva. Later he became famous by the names Purnaprajna, Anandatirtha and Madhvacharya (or just Madhva). Pūrnaprajña was the name given to him at the time of his initiation into sannyasa (renunciation), as a teenager. The name conferred on him when he became the head of his monastery was "Ānanda Tīrtha". All three of his later names are found in his works. Madhvācārya or Madhva are names most commonly found in modern literature on him, or Dvaita Vedanta related literature. Madhva began his school after his Upanayana at age seven, and became a monk or Sannyasi in his teenage, although his father was initially opposed to this. He joined an Advaita Vedanta monastery in Udupi (Karnataka), accepted his guru to be Achyutrapreksha, who is also referred to as Achyutraprajna in some sources. Madhva studied the Upanishads and the Advaita literature, but was unconvinced by its nondualism philosophy of oneness of human soul and god, had frequent disagreements with his guru, left the monastery, and began his own tattvavada movement based on dualism premises of Dvi – asserting that human soul and god (as Vishnu) are two different things. Madhva never acknowledged Achyutrapreksha as his guru or his monastic lineage in his writings. Madhva is said to have been clever in philosophy, and also to have been tall and strongly built. Madhvacharya never established a matha (monastery) dedicated to Dvaita philosophy, however his lineage of students became the sanctuary for a series of Dvaita scholars such as Jayatirtha, Sripadaraja, Vyasatirtha, Vadiraja Tirtha, Raghuttama Tirtha, Raghavendra Tirtha and Satyanatha Tirtha who followed in the footsteps of Madhva. A number of hagiographies have been written by Madhva's disciples and followers. Of these, the most referred to and most authentic is the sixteen cantos Sanskrit biography Madhvavijaya by Narayana Panditacharya – son of Trivikrama Pandita, who himself was a disciple of Madhva. Incarnation of Vayu, the wind god In several of his texts, state Sarma and other scholars, "Madhvacharya proclaims himself to be the third avatar or incarnation of Vayu, wind god, the son of Vishnu". He, thus, asserted himself to be Hanuman – the first avatar of Vayu, and Bhima – a Pandava in the Mahabharata and the second avatar of Vayu. In one of his bhasya