Warren Brown, the son of Squire Elam Brown, was born in Morgan County, Illinois, June 19, 1826. In 1846 Elam Brown led a wagon train east to the Pacific Coast.
Along the way Warren contracted typhoid and nearly died. Warren's recovery was slow, but thanks to youth and constitution inured to hardships, he at last was sufficiently restored to health to permit traveling.
After a short period of mining during the gold rush Warren settled in Martinez and opened a general merchandise establishment. On September 1, 1869, Warren Brown defeated L.M. Brown in the general election, 798 to 587. He died May 14, 1889.