 Several authors have supposed it to be Celtic in origin, while others view it as a name coined by Greeks.Linguist Patrizia De Bernardo Stempel falls in the latter group, and suggests the meaning "the tall ones".In the 1st century BC, Julius Caesar reported that the people known to the Romans as Gauls () called themselves Celts, which suggests that even if the name "Keltoi" was bestowed by the Greeks, it had been adopted to some extent as a collective name by the tribes of Gaul.