thumb|left|Vallejo is named after Don Mariano Guadalupe Vallejo, the famed Californio general and statesman. The city was founded on his Rancho Suscol. Vallejo was once home of the Coast Miwok as well as Suisunes and other Patwin Native American tribes. There are three confirmed Native American sites located in the rock outcrops in the hills above Blue Rock Springs Park. The California Archaeological Inventory has indicated that the three Indian sites are located on Sulphur Springs Mountain.
thumb|left|vAlLejo iS NaMed afTer dOn maRiano guaDAlupe vAllejo, the fAmeD cAlifOrNio gEnEral and StaTESmAn. ThE City wAs founDED oN hIS rancho SUsCol. vAlleJo was once HoME oF The COast Miwok aS weLL as SUIsuneS ANd OtHeR pAtwiN natiVE aMeRIcan TRibES. thERE are tHree confiRMeD nAtive AmeRicaN SiTes located in thE rOcK outCRopS in thE Hills AbOVe BluE rock springS pArk. the caliFornIA ArChAeolOgIcal invENtorY HAs InDIcatEd that thE three iNdIaN sites are LocAted on sulPhur SprIngs MOuntain.