Who is Willard Richards from No Man Knows My History: The Life of Joseph Smith and what is their importance?

Willard Richards was Joseph's scribe, writing his letters and prophesies, and other important documents. He was present at Carthage jail when the mob stormed it. He was unarmed and used his walking stick to knock down the rifles that were poked through the door in an attempt to shoot the prophet. Richards received slight scratches, but no major injuries from the attack. It was Willard who went to the yard and carried the body of Joseph back to the cell and laid it out beside his brother. He then sent a message to Nauvoo, telling of the martyrdom of Joseph and Hyrum, and cautioned that there be no violence. The members listened to him.