Clermont-Ferrand’s first name was Augusto Nemetum. It was born on the central knoll where the cathedral is situated today. It overlooked the capital of Gaulish Avernie. The fortified castle of Clarus Mons gave its name to the whole town in 848, to which the small town of Montferrand was attached in 1731, together taking the name of Clermont-Ferrand.