How's that?
--Julius Caesar, Bellum Gallicum1.1.1
The whole of Gaul is divided into three parts, one of which the Belgae inhabit, the Aquitani another, and the third a people who in their own language are called "Celts," but in ours, "Gauls." They all differ among themselves in respect of language, way of life, and laws. (Translated by Carolyn Hammond, Oxford World's Classics)
The Latin word for "a Gaul" was "Gallus," but the word "gallus" also meant rooster.