Guy of Boulogne
Guy of Boulogne (1313 – 25 November 1373) was a statesman and cardinal who served the Avignon Papacy for 33 years. He participated in the papal conclaves of 1352, 1362 and 1370, and was the Subdean of the Sacred College of Cardinals. His diplomatic postings were extensive, including Hungary, Italy, and Spain. He headed an effort to end the Hundred Years' War. The historian Kenneth Setton called him "one of the commanding figures of his day, and the letters of Petrarch abound with references to him".