William of Newburgh was a medieval English historian and theologian, known for his critical approach to historical writing in the 12th century. He was a canon of the Augustinian priory at Newburgh, Yorkshire, where he dedicated much of his life to scholarship and the study of history. His most significant work, "Historia rerum Anglicarum," chronicles English history from the Norman Conquest to his own time, providing a detailed narrative that blends historical fact with moral reflection. William's writing is notable for its emphasis on the importance of evidence and rational inquiry, setting a precedent for future historians.