The apparently peaceful conquest of California soon began to fray at the edges in southern California. Revolts broke out in Los Angeles, and the occupation forces under Archibald Gillespie and his 30-40 men were driven out. José Castro returned, and Larkin moved his family to Yerba Buena (San Francisco) as the Californios throughout the province were attempting to repel the thinly spread out California Battalion garrison troops and Navy forces. Larkin was captured outside of the city when, against advice, he tried to go to his deathly ill daughter, still in Monterey. Larkin was forced to ride to Santa Barbara. En route, he witnessed the inconclusive Battle of Natividad (near Salinas) from General Castro's side. He was later imprisoned in Los Angeles and was not reunited with his family until after the signing of the Treaty of Cahuenga which ended four months of skirmishes. His daughter died while he was a captive.