Mason Weems

Mason Locke Weems, later known as Parson Weems, was a parish-rector, bookwriter and salesman.

Bioraphy
In 1776, Mason Weems had been imprisoned in Bridewell Prison. There, he spent three months on carving a key from a piece of metal, only to have it stolen by anoter prisoner. He then met the Assassin Connor, who had been falsely accused of plotting to kill George Washington, who came to him for help in escaping. Mason was reluctant to help, until he learned that Washington was in danger. He then instructed Connor to retrieve the key, get moved to the high-security area of the prison, and swap the fake key with the one from the warden. Once Connor had done all that, Mason explained where he could find Thomas Hickey, so that Connor could kill him and end the threat to Washington.

After his release from prison, Mason started writing biographies. He wrote biographies for George Washington, Benjamin Franklin, Francis Marion, and William Penn. His biographies were known to be hugely inaccurate and exaggerated.

Reference

 * Assassin's Creed III