generation of Suisunes. Sem-Yeto was described as tall, 6 feet 7 inches, handsome and brave. Sem-Yeto was baptized in the San Francisco Mission in July 1810 at roughly age 10 with the name "Francisco Solano" and lived there until adulthood. He became known as Chief Solano. His baptism took place 2 months after the tragedy of 1810. Sem-Yeto was possibly captured as a child in Moraga's raid of 1810 or his family brought him within two months of the battle. In 1823, Sem-Yeto and the Suisun people at Mission San Francisco moved into the new mission in the town of Sonoma, California, the Mission San Francisco de Solano, to help build and populate this final Franciscan mission built north of the San Francisco Bay. In 1834, General Mariano Guadalupe Vallejo of Sonoma, as the comandante of the new pueblo projects in the region, became a very valuable patron and friend to Chief Solano, and formed an alliance with the Suisunes. The mission system was closing down. Chief Solano and the Suisunes led many expeditions with the object of quelling the other tribes of the region, particularly "the Wappo, the Satisyomis (aka Sotoyomes, a Wappo tribe) and the Cainameros (aka the Pomo Indians of Cainama in the region toward Santa Rosa)", who were attempting to throw off Mexican domination. Chief Solano eventually helped to secure peace between the region's Native Americans and the Mexicans. A peace treaty was signed in 1836. With the alliance with General Vallejo, the tribe was relatively powerful. On a political venture, Vallejo even arranged for and sent Chief Solano and 100 warrior Suisunes to travel down to Monterey, California to impress and seek military support from Juan Bautista Alvarado, governor of Alta California (1836–1837, 1838–1842). In 1837, a smallpox epidemic decimated the native population of the Sonoma region, as well as from other diseases brought in from the Spaniards as well as the Russians at Fort Ross. Chief Solano was one of the few natives to receive a vaccination. Chief Solano was also one of a handful of natives to receive a land grant in the mission secularization and parcelling out of Mexican-American lands. The Suisunes who survived the epidemic began to earn their livelihoods through farm labor or fishing. Some chose to work as seasonal or year-round ranch labors for Vallejo at the Rancho Petaluma Adobe or other area ranches. In 1846, at the end