Francin is a former commune in the Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France. On 1 January 2019, it was merged into the new commune Porte-de-Savoie.The Château de Carron is found here.
Wikipedia https://en.wikipedia.org/wiki/Francin
Coordinates 45°30'0.5" N 6°2'0.047" E