Hardly had men been set hewing timbers for San Carlos than Serra traveled to the south over the Sierra de Santa Lucia and through the great valley of the oaks named by Serra, Los Robles. Here in a secluded spot near a small river was the site of the third mission. And in July of 1771 it was founded and named for Saint Anthony of Padua. Bells were hung from the sturdy branch of an oak tree and Serra rang them long and loudly until Indians arrived. They brought an offering of pine nuts and acorns. Ten years later San Antonio had more than a thousand native converts and was famous for its fertile grain fields. And though San Antonio ranked among the largest of the missions it passed all of its days in pastoral surroundings and never became the site of any town or village.