The "Gayatri mantra" has been personified into a goddess, though a relatively obscure and highly textualized one, almost always accompanied by her Sanskrit mantra (bazaar art, 1910's)

Source: ebay, Nov. 2006

"According to the sacred texts, The Gayatri is Brahma, Gayatri is Vishnu, Gayatri is Shiva, Gayatri is Vedas. Gayatri later came to be personified as a Goddess. She is another consort of lord Brahma. She is shown as having five heads and is usually seated on a red lotus - this signifies wealth. The four heads of Gayatri represent the four Vedas, the fifth head represents the almighty God. In her ten hands she holds all symbols of Lord Vishnu. The weapons held by the ten hands of Gayatri give a divine protection, desired boon to the aspirant, at the same time all the enemies and bad elements working unfavourably against the devotee are killed."

Another view; bazaar art, mid-1900's

Source: ebay, Mar. 2006

A bazaar art print, c.1970's

Source: ebay, Dec. 2006

A bazaar art print, c.1980's

Source: ebay, Dec. 2007