per sthala purana, Kaladushaka - a thief used to donate half of
the loot to Perumal kallapiraan. Once, when caught stealing in the
Royal palace, he meditated on Lord. Lord entered his body and preached
vedanta to the king and then displayed his true form to both the
king and the thief. The perumal came to be known as Kallappiran"
(Kallan - thief). Once Somakan a demon took away Brahma's knowledge.
Brahma after praying (meditating) on the Lord here, regained the
srushti gnana which was taken away by the demon.
Two Thaayaars in separate sannadhis - Vaigundavalli, Boodevi.
Theertham - Brigu Theertham, Taamirabarani