There are scant references in our history or other books about this remarkable man who was a courtier in one of the most dazzling royal courts in history.The only credible and authoritative source about Sankaranatha Jyotsar, I could find from sources outside Kerala, was from the link <a href="http://www.esikhs.com/articles/a_retrospect.htm">http://www.esikhs.com/articles/a_retrospect.htm</a> under the chapter ???The Sikhs - Images of a Heritage??? written by