Sir if you have seen the movie, please could you mention a gist of it. Is it a different story or the same madurai veeran kathai folk story (of madurai veeran killed by the madurai nayaks for falling in love with a 'vellaiammal' of their household) ?
I came across the deity Madurai Veeran only a few months back when i started studying various kula-devas and how they are related to various clans. From what i understand Madurai Veeran is the kula deity of several Pallar families. How Madurai Veeran became the diety of chakkalis or Arunthathiyars is a mystery to me.
Since the term Madurai Veeran simply translates to a brave warrior of madurai, i suppose there was more than one madurai veeran. Or perhaps a section of Pallars became downgraded as arundathiyars.