text: Gulnac and Weber dissolved their partnership in 1843. Gulnac's attempts to settle the Rancho Campo de los Franceses failed, and Weber acquired it in 1845. In 1846 Weber had induced a number of settlers to locate on the rancho, when the Mexican–American War broke out. Considered a Californio, Weber was offered the position of captain by Mexican general José Castro, which he declined; he later, however, accepted the position of captain in the Cavalry of the United States. Captain Weber's decision to change sides lost him a great deal of the trust he had built up among his Mexican business partners. As a result, he moved to the grant in 1847 and sold his business in San Jose in 1849.
  Gold Rush era
  At the start of the California Gold Rush in 1848, Europeans and Americans started to arrive in the area of Weber's rancho on their way to the goldfields. When Weber decided to try his hand at gold mining in late 1848, he soon found selling supplies to gold-seekers was more profitable.
  As the head of navigation on the San Joaquin River, the city grew rapidly as a miners' supply point during the Gold Rush. Weber built the first permanent residence in the San Joaquin Valley on a piece of land now known as Weber Point.  During the Gold Rush, the location of what is now Stockton developed as a river port, the hub of roads to the gold settlements in the San Joaquin Valley and northern terminus of the Stockton - Los Angeles Road. During its early years, Stockton was known by several names, including "Weberville," "Fat City," "Mudville" and "California's Sunrise Seaport."  In 1849 Weber laid out a town, which he named "Tuleburg," but he soon decided on "Stockton" in honor of Commodore Robert F. Stockton. Stockton was the first community in California to have a name that was neither Spanish nor Native American in origin.