He is the propagator of yoga and grammar.
Well known for his great works.
What was his life story ?
Maharishi Patanjali was a saint who is believed to have lived some time during the 2nd century BCE.
He was contemporary of Puṣyamitra Śuṅga (185 – 149 BCE : the founder and first ruler of the Shunga dynasty). He was the priest in the Ashwamedha yajna performed by Puṣyamitra Śuṅga.
He is known for his treatise on Yoga, entitled
Patanjali Yoga Sutra
Tradition says that Patanjali was also the author of
Mahaabhaashya (related to grammar)
Charakapratisamskrtah (medical text)
Note: There has been a considerable debate on these two.
Hence, Patanjali is believed as a saint
who removed the impurities of the mind through Yoga, of speech through Grammar, and of the body through medicine.
More about Maharishi Patanjali can be found here.