Pierre Cauchon was a French Catholic prelate who served as Bishop of Beauvais from 1420 to 1432. He was a partisan of Burgundian and English interests in France during the latter years of the Hundred Years' War. In 1431, he served as judge in the trial of Joan of Arc, which found her guilty of heresy, and played a key role in her execution. In 1432, he was appointed as the Bishop of Lisieux, serving until his death in 1442. He was buried in Lisieux Cathedral. The Catholic Church overturned the verdict of Joan of Arc's trial in 1456.