The lands taken up by members of the Callahan family from the 1870s through the 1890s may have been occupied by others in the 1850s and 1860s, but no deeds were located.
The first set of U.S. Senators from California (1850) were abolitionist John Fremont and Southern sympathizer William Gwin. The latter later owned the Gwin Mine near what today is Paloma.