Richard Fetherston was an English Roman Catholic priest who served as the Archdeacon of Brecon. During his career, he acted as a chaplain to Catherine of Aragon and provided Latin instruction to her daughter, Mary Tudor. Due to his vocal support for the marriage of the King and Queen, he was eventually imprisoned in the Tower of London. He was executed in 1540 at Smithfield, dying for his religious convictions and his defense of the royal marriage.