[1] The grant was north east of present-day Fairfield and was bounded on the south by Rancho Suisun.
Armijo returned to New Mexico to gather relatives, workers and provisions, and began the trip back to California in May 1841.
In 1842, Armijo brought his four sons, wife, Jesus Maria Armijo, and daughter and 100 head of cattle from New Mexico and built an adobe house, to replace the earlier structure he had erected, and began running cattle in the surrounding hills.
For a time, bitter warfare, with frequent acts of violence and bloodshed, was waged by both sides, in and out of court.
With the cession of California to the United States following the Mexican–American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored.
The dispute was finally decided upon appeal to the Supreme Court of California in the important 1859 Waterman v. Smith decision.