a chief of the Chauci, a Suevian race settled between the Weser (Visurgis) and the Elbe ( Albis). Gannascus himself, however, was of Batavian origin, and had long served home among the Batavian auxiliaries. He had deserted in A. D. 47, when, at the head of the Chauci, he passed up the Rhine, and ravaged the western bank of the river. His inroads were stopped by Cn. Domitius Corbulo [CORBULO], into whose hands Gannascus was betrayed, and executed as a deserter. (Tac. Ann. 11.18, 19.)