What is "attacotti"

The Attacotti (Atticoti, Attacoti, Atecotti, Atticotti, Atecutti, etc. variously spelled) were a people who despoiled Roman Britain between 364 and 368, along with Scotti, Picts, Saxons, Roman military deserters, and the indigenous Britons themselves. The marauders were defeated by Count Theodosius in 368.

Units of Attacotti are recorded about 400 AD in the Notitia Dignitatum, and one tombstone of a soldier of the Atecutti is known. Their existence as a distinct people is given additional credence by two incidental references to them, as cannibals and as having wives in common, in the writings of Saint Jerome.