Origin story
Kodhai, a foundling raised in Srivilliputhur, grew up in devotion to Ranganatha and insisted on marrying him. She merged with the deity and became Andal, she who ruled the Lord, and her Tiruppavai is recited during the Margazhi month in Vaishnava temples.
Andal is the only female Alvar, a Tamil saint whose hymns are part of the Nalayira Divya Prabandham. The garland, the parrot and her bridal devotion express surrender and the sweetness of bhakti, and her worship celebrates the feminine voice at the heart of the tradition.
Source: Wikipedia: Andal — https://en.wikipedia.org/wiki/Andal