[PROJECT] History Lessons

The Celts were a large group of tribes related to the Germans. They lived in an area ranging from Ireland to Germany. So, the Gauls were not exactly Celts, but they were closely related. Moreover, the term "Gauls" was used to refer to all the inhabitants of Gaul, and there were many different peoples living there.
As for modern names, they are more likely to be of Indo-European origin.