A tour of Historic St. Mary's Mission is a visit to the cradle of civilization in Montana - a truly enlightening and historical experience.
The history of St. Mary's Mission begins with the arrival in the Northwest of twenty-four Iroquois Indians employed as trappers by the Hudson's Bay Company. During the 1823-24 season, twelve of these Iroquois remained among the Salish in the Red Willow (now Bitterroot) valley. They were adopted into the tribe and married the Salish women.
Coming from a nation which had been introduced to Christianity some two hundred years earlier, when they gathered around the campfire in the evenings the Iroquois talked about white men who wore long black gowns, carried crucifixes, did not marry and whose practice it was to instruct people, bringing them to know God and all things to enable them to live after death. The Salish, together with their neighbors the Nez Perce, became so interested in these stories that between 1831 and 1839 they sent four delegations to St. Louis to obtain a Black Robe to live among them to teach them all these things to which the Iroquois referred.
On September 24, 1841, Father Pierre Jean DeSmet, together with his fellow Jesuit missionaries, Fathers Gregory Mengarini and Nicolas Point, and three Lay Brothers arrived in the Bitterroot valley with their belongings and supplies in three carts and a wagon, the first vehicles to enter the area. They established the first white settlement in what was to become Montana, on the east bank of the Bitterroot river, immediately west of the present town of Stevensville. The new mission, as well as the river and the tallest mountain peak to the west, were named "St. Mary's". Fifty years later the name of the river was changed to "Bitterroot" by the Forest Service.
The first chapel measured 25x33, with two galleries in order to accommodate the entire tribe. Father DeSmet made a trip to Fort Colville of the Hudson Bay Company and returned with supplies to tide them over the winter, plus wheat, oats, potatoes and garden seeds for the first crops.
The news of the Black Robes' arrival spread, and within a short time Indians from many tribes came to visit. The following year, a larger church, 30x60, was built a few hundred yards east of the river. Following a trip to Fort Vancouver on the west coast, from where he brought into Montana the first cattle, swine and poultry, Father DeSmet returned to St. Louis. After seeing off a group of helpers to travel overland to St. Mary's, he left for Europe to seek recruits and funds for the new mission area in the Northwest.