 Vincent Magri set up St. Peters Mission at Priest Butte on the Teton River, on a site just southeast of the current town of Choteau, Montana.They built three log cabins, and were soon joined by father Camillus Imoda.However they had to abandon this site in 1860 and moved their mission to the Sun River, about upriver from Fort Shaw, near what is now Simms, Montana.