Guy of Avesnes

Guy of Avesnes (c. 1253–1317), younger son of John I of Avesnes, was bishop of Utrecht from 1301 to 1317, appointed through his brother John II, count of Hainaut and Holland.

In 1304, while leading Flemish troops against his brother, he was captured at the Battle of Duiveland; in his absence the Fresingen seized power in Utrecht with guild support. He subdued the city in 1305 and granted town privileges to Amsterdam in 1306, attended the Council of Vienne in 1311 and was buried in Utrecht Cathedral after his death on 23 May 1317.