Male first name (German, Swiss German, Romansh): Reto; the Rhaetian; Latin (Geographic name as first name), the Rhaetian (from the territory of the Romansh in the Swiss Alps), goes back to 'Rhaetia' or 'Raetia', the name a Roman province (such as on the territory of the Grisons, Tyrol and Vorarlberg), the name of the province is perhaps of Celtic origin, from 'rait' (Bergland)