The Native Americans of Suisun lived in the area of Solano County. They used plants and animals from Suisun Valley, Green Valley, Rockville hills, and the Suisun Marsh for survival. The Suisuni’s depended on natural resources and the seasons. Their main village and meeting place was by Rockville hills. They hunted and gathered there and lived by Suisun Valley and Green Valley. At Rockville crossroads, they traded with other Indian tribes such as the Tolenas, Malacas and Ululatos. They traded important things like the bright orange feathers of the flicker bird.

There were two villages in Suisun Marsh. One was Mesaia, which was near what is now Suisun City. The other was near what is now Rush Ranch.

There is a huge rock piece where the Suisuni women ground acorns. They used a rock as a mortar and a rock in their as a pestle. This made bowl-like holes in the rock.

In 1800 there were about 2,300 Patwin Native Americans in Solano County. In 1823 Father Jose Altimira, who founded (started and built) Sonoma Mission, came to Solano and found no Patwins left.