Yesu Matha Niragaranam

Siva Prakasar was a Tamil philosopher, sage and poet who lived at the end of 17th century.^[1] He was also called "Siva anuputhi selvar", "Karpanai Kalangiyam", and "Thurai mangalam Sivaprakasar". A Shaiva Siddhanta,^[2] he contributed more than 34 books to Tamil literature.

The historian Roberto de Nobili met Prakasar and debated with him about Hinduism and Christianity. After the debate, Prakasar compiled his book. No copies of the book have been found. Some writers say that Prakasar debated with Rev. Fr. Constanzo Beschi (alias Veera ma munivar) rather than de Nobili.^{[citation needed]}

S.V.S. Rathinam, a bench magistrate from Prakasar's brother Velaiyar's lineage, mentioned this book in his autobiography Naan Ungal Thoni.^{[citation needed]} He wrote that his grandfather Susai, alias Swaminatha Desikar, son of Sundaresanar, had a palm leaflet copy.^{[citation needed]}