[2] At that time, there were only a handful of English-speakers in Alta California, and Livermore probably also met the American Joseph John Chapman.On 20 June 1823, Robert was baptized at the Mission Santa Clara into the Catholic faith, given the name Juan Bautista Roberto y José.[2] In 1834 Livermore and his business partner José Noriega were keeping livestock at Rancho Las Positas, where they also built an adobe.Later the adobe structure was rented to Nathaniel Greene Patterson who used it as a small hotel, the first place of entertainment in the valley.[4] His only participation in the events surrounding the conquest of California was to help carry word from Commodore John Drake Sloat to John C. Frémont at Sutter's Fort that Monterey had been occupied by American forces, and that may have been partly motivated by the fact that Noriega had been captured during the Bear Flag Revolt and was being held at Sutter's Fort.[2] Their lands were on the route from the southern San Francisco Bay Area to the goldfields and so, a post office was established there in 1851, operating for two years.
Livermore's grave marker currently in the mission floor, showing a death date 14 March 1858.