Gangaji, born Merle Antoinette ("Toni") Roberson in Texas in 1942, is an American teacher or guru who regularly gives Satsangs around the globe. She is said to have attained self-realization in 1990 after an encounter with Poonjaji, a disciple of Ramana Maharshi, who sent her back to the West to teach. Wikipedia
The definitive Wikipedia entry for Gangaji. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Gangaji