San Francisco Gold Rush Chronology 1846-1849 October 21, 1849 Pioneer Nathan Spear died at age 47. He had heart disease. Spear Street was later named for him. Rev. O. C. Wheeler baptized Col. Thomas Kellam by immersion in the waters of San Francisco Bay. Found on: http://www.sfmuseum.org/hist/chron1.html Who is this Col. Thomas Kellam?