What is "paranjothi"

Paranjothi , popularly known as Siruthondar was a legendary army general of the great Pallava king Narasimavarman I who ruled South India from 630–668 CE. He also led the Pallava army during the invasion of Vatapi in 642 CE. In the later years of his life, Paranjothi gave up violence and became a wandering Saivite monk. He is venerated as one of the 63 Nayanmars.