Little is known about Jackson's movements until just after the 1826
Rocky Mountain Rendezvous, a major gathering of trappers and traders. It is presumed he was at the first, 1825 rendezvous held on
Henrys Fork of the
Green River, but he may not have been at the one held in 1826 at
Bear River in
Cache Valley. Soon after the rendezvous, Ashley, along with his party taking back the furs, traveled with Smith and
William Sublette to near present-day
Georgetown, Idaho. There, Jackson and the other men bought out Ashley's share of the Ashley-Smith partnership. As a partner, Jackson took on the role of field manager, possibly because of his similar role when working for Ashley. That fall, Jackson, Sublette, and
Robert Campbell trapped along the
Snake River system, then moved up into the upper Missouri and over the
Great Divide to the headwaters of the
Columbia River.) Jackson and his party traveled south to
Cache Valley, where they spent the rest of the 1826-1827 winter. He was at the 1827 rendezvous at Bear Lake, then returned to St. Louis, Missouri, which had become a center of fur trade, with Sublette for a short time. Jackson returned to the fur country for the 1828 rendezvous, after which he traveled with a party to the
Flathead Lake,
Montana region, where they wintered. At the rendezvous, Smith, Jackson and Sublette sold out their interests in the fur trade to a group of men who called the firm the
Rocky Mountain Fur Company. The three partners returned to St. Louis, having made a tidy profit in their enterprise.
Trip to Santa Fe By early 1831, Jackson was in southeast
Missouri's lead belt, attending to his personal affairs and those of his brother George, who died on March 26, 1831. On April 7, he returned to St. Louis to meet with his partners for a trade trip to
Santa Fe, which was controlled by the Spanish. The caravan of wagons left St. Louis on April 10, 1831, traveling down the
Santa Fe Trail. To save time, the group decided to take the "Cimarron cutoff," at the risk of not finding water for two days. Smith went missing while looking for water, but the caravan continued on, hoping he would find them. Upon reaching Santa Fe on July 4, 1831, the members of the trading party discovered a Mexican merchant at the Santa Fe market offering several of Smith's personal belongings for sale. When questioned about the items, the merchant indicated that he had acquired them from a band of
Comanche hunters. Smith had encountered and been killed by a group of Comanche. His death resulted in Jackson and Sublette reorganizing their partnership. ==California==