 The Catuvellauni, who migrated to southern Britain, are probably part of the same tribal group.They are mentioned as "Catalaunos" by Eutropius (4th c. AD), as "(Cat)alaunorum" in the "Notitia Dignitatum" (5th c. AD).The name "Catalauni" most likely stems from Gaulish "Catu-uellauni" ('war-chiefs, chiefs-of-war', from "catu-" 'combat' attached to "uellauni" 'chief, commandants').