Hanuman Chalisa Was composed by Tulsidas, a sixteenth-century poet-saint who was also a philosopher and reformer. Tulsidas can also be renowned because the composer of Ramcharitmanas for his devotion to Shri Rama. It is popular that Tulsidas would recite the Hanuman Bahuka to cure himself of his critical arm ailment; https://www.youtube.com/watch?v=ufkmD95y7fE&t=1s