Karaikal is a maritime trading city in Chola Nadu. Ammaiyar was born to Dhanathathanar, a merchant. From childhood, Ammaiyar grew up with great love in god.In her childhood ammaiyaar built shivalinga using sand. Ammaiyaar chanted the five letter mantra Namasivaya and attended to the needs of Shaiva devotees.Even in her very young age, Ammaiyaar cared the shaiva devotees like a mother.
Ammaiyaar was wedded to Paramathathan, the son of a rich merchant in Nagapattinam. Shaiva devotees who visited her home were lavishly fed and were given clothes and jewels.