The first major historian of post-Roman Western Europe, Gregory relates the Christianization of Gaul and the rule of Merovingian Frankish kings down to his own time. He is less concerned with the interests of the Frankish Kingdom as such than with those of the church, and some modern historians have therefore seen the History of the Franks title, which was not Gregory's own, as something of a misnomer.
Free online texts
Internet Archive: History of the Franks, translated by Ernest Brehaut (1916). Multiple formats.
Internet History Sourcebook: History of the Franks, Books I-X, abridged translation by Ernest Brehaut (1916). HTML format.
YouTube: Clovis and The Franks. YaleCourses. The Early Middle Ages, 284--1000 (HIST 210), with Paul Freedman.
The Great Conversation: Further reading at Tom's Learning Notes
Virgil: The Aeneid
Sallust: The War with Catiline - one of the classical works known to have been read by Gregory.
Latin Resources: Online materials for learning Latin.