Vadama meaning "Northerners" are a sub-sect of the Iyer community of Tamil Brahmins. While some believe that their name is an indication of the fact that they were the most recent Brahmin migrants to the Tamil country others interpret the usage of the term "Vadama" as a reference to their strict adherence to the Sanskrit language and Vedic rituals which are of northerly origin . It may also be possible that Vadamas may be Brahmins whose origins lie in the Dravida region of northern Tamil Nadu. Like other Iyer communities, they follow the Advaita philosophy propounded by Adi Shankara. A significant proportion of the Vadama community adopted Vaishnavism, and are thus believed to have given rise to the Vadagalai Iyengar community. The oldest historical references to Vadamas date from the first millennium AD. A large number of Vadamas migrated to Kerala during the medieval period, so that Vadamas along with the Brahacharnam form the majority of the Kerala Iyer community. A section of the Vadama community also migrated north to the Telugu country and Maharashtra where they were known as "Dravidas".