[1] Sharma also writes, "Narayanacharya was one of the fiery champions of the Dvaita school, that rose to defend it against the slashing attacks of Appayya Dikshita and others".
[1] American historian Anthony Grafton and classicist Glenn W. Most considered the work Advaita Kalanala along with the Abhinava-Gada of Satyanatha Tirtha as a new mace which broke the heads of non-dualists like Appayya Dikshita.
Indologist B. N. K. Sharma says, Narayanacharya gives about himself is that he is "Vaishvānathih", son of Vishvanatha and his guru was Vedavyasa Tirtha of Uttaradi Math in the sixth introductory verse of his Madhvamantrarthamanjari.
[1] Tarangini Ramacharya has given us ample information about himself about his father name Vishvanatha, his gotra Upamanyu, and his family surname "Vyasa", besides mentioning that he had an elder brother Nārāyaṇācārya who was a veteran scholar in Vyakarana and other Shastras and that he had his scholastic training under him.
Indologist B. N. Krishnamurti Sharma says, "In this work carping, criticisms, and bitter personal attacks of the Dikshita are vigorously returned by Narayanacharya".