In 1823, Sem-Yeto moved to the present-day town of Sonoma, California, to help build and populate the Mission San Francisco de Solano, along with many of the Suisunes tribe who had grown up at the San Francisco Mission. Mission Solano was the final Franciscan mission north of the San Francisco Bay and built under Mexican rule. Traveling from the San Francisco Mission to the Sonoma Mission was a good move for Suisunes as they were much closer to their homeland at the second mission.