Origin story
Gandhari, princess of Gandhara, was married to the blind prince Dhritarashtra and blindfolded herself for life in solidarity with him. Through a boon she became the mother of a hundred sons, the Kauravas, and she watched their rivalry with the Pandavas lead inexorably to war.
After the slaughter of her sons she became a voice for the grief of women, and her curse on Krishna for allowing the destruction is one of the Mahabharata's most powerful passages. In Kerala she is worshipped as Gandhari Amman; the Gandhari Amman Kovil in Thiruvananthapuram holds her as the principal deity, with shrines to Ganesha, Muruga, the Naga devathas, Bhairavar and the Navagrahas.
Source: Wikipedia: Gandhari — https://en.wikipedia.org/wiki/Gandhari