Bhargavi, also known as savitri, gayathri, and saraswati in Ancient hindu customs of goddess worship.

Perhaps the greatest poetic composition given to gayathri devi is the gayathri manthra.

The fact that Lord Krishna in Bhagvadgeeta said "among the manthra's, i am the Gayathri"

Also famous is another story:

In ancient India,Sage Bhrigu was Vishnu's devotee. He had married kardama's daughter Khyati. In answer to the prayer of that couple, Goddess Lakshmi was born as their daughter. Because she was the daughter of Bhrigu, she got the name 'Bhargavi'.