Gregory of Tours was a 6th-century historian and bishop born around 538 AD in what is now France. He is best known for his work, "History of the Franks," which chronicles the history of the Frankish people and their rulers, particularly the Merovingians. His writings provide valuable insights into the social, political, and religious life of early medieval Europe. As a bishop of Tours, Gregory played a significant role in the Christianization of the region. His accounts also include details about the lives of saints and the spread of Christianity, making his work an essential source for understanding the transition from paganism to Christianity in Gaul.