Baba Rampuri
The first western Naga Sadhu, who converted in 1970, is Baba Rampuri, also known as Rampuri, author of 'Autobiography of a Sadhu: A Journey into Mystic India, published in 2010,' (originally published in 2005 as 'Baba: Autobiography of a Blue-Eyed Yogi')[1] He "became the first foreigner to be initiated into India’s most ancient order of yogis and shamans, the Naga Sannyasis", after leaving his native California in 1969 on a spiritual quest.
He is a Naga Sadhu.
He featured in the 2013 National Geographic documentary on the Kumbh Mela [2]