Lucius of Chur was a legendary priest and bishop who lived during the 5th or 6th century. Though some accounts suggest he may have originated from Britain, he was likely born in the Prättigau region of Switzerland. He is remembered as a missionary working within Raetia, specifically near the mountain pass that now bears his name. As the brother of Saint Emerita, his life and religious work are deeply connected to the local history of the Swiss Alps.