2018 San Francisco mayoral special election
Ed Lee, who was appointed Mayor of San Francisco in 2011 following Gavin Newsom's election as Lieutenant Governor of California, elected to a full term in 2011, and reelected in 2015, died of cardiac arrest on December 12, 2017. London Breed, the President of the San Francisco Board of Supervisors, became the city's acting mayor.
Henry F. Teschemacher
Henry Frederick Teschemacher (February 16, 1823 – November 26, 1904) served as the tenth mayor of San Francisco from October 3, 1859 to June 30, 1863.