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Korakkar was a Siddhar, one of the celebrated yogis of South Indian Hinduism. He was a student of the Siddhars Agathiar and Bogar, and is mentioned various times in the works of Bogar. His name was Tamilised from the original Gorakh identifying him with Gorakshanath, who lived probably in the early 11th century and founded or reformed the Nath order of renunciants, an early Yoga movement.
His works include Korakkar Malai Vagatam (Korakkar's Mountain Medicines), Malai Vaakadam, Korakkar Vaippu, Kaalamegam, Marali Varadham, Nilaiyodukam, and many more.