It all started from Guruji S. Vithyanadan, the great grandfather and S. V. Vertrivalle, his son who delivered predictions based on Sivanadi. Over the years, the preservation of sacred palm leaf manuscripts on which the past, present and future events of life have been recorded got tough and eventually lead to scarcity of the scripts, regarded to be the work of Vedic sages. So, the father S. V. Arumugam, although has based his predictions originally on Siva Nadi, later began pursuing predictions from Agasthya Nadi. The ancestors of Guruji Siva Guru Swamy belonged to Meikandanadhar gothra or lineage hailing from Vaitheeswarankoil of Tamilnadu in India..
The origins of Palm leaf astrology or Naadi astrology as most popularly known, is traced back to Vaitheeswaran Koil, a Hindu temple in Tamil Nadu (India), dedicated to god Shiva.