Gregory of Tours, Saint, 538-94, French historian, bishop of Tours (from 573), b. Clermont-Ferrand, of a prominent family. He had a distinguished and successful career as bishop. Gregory wrote accounts of miracles of the saints, an astronomical work to determine movable feasts, and a commentary on the Psalms. His masterpiece, Historia Francorum [history of the Franks], in 10 books, is a universal history; its account of contemporary events is of great importance. Gregory's Late Latin is of linguistic interest. Feast: Nov. 17.