Original sentence: The barons of Faucigny dominated the valley of the Arve and its tributray the Giffre, the Arly as far as Flumet, and the valley of Doron de Beaufort (Beaufortain).The fertile valley of the Aver and the area around Faucigny were already settled in neolithic times, and there are numereous Roman ruins
Edited sentence: The barons of Faucigny dominated the valley of the Arve and its tributary the Giffre, the Arly as far as Flumet, and the valley of Doron de Beaufort (Beaufortain).The fertile valley of the Aver and the area around Faucigny were already settled in neolithic times, and there are numerous Roman ruins