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Alameda County was incorporated on March 25, 1853. However, it's origins date back to the 1700's.
March 20, 1772
San Leandro discovered by Capt. Pedro Fages and Fr. Crespi.
June 9, 1797
Mission San Jose founded.
May 5, 1838
Robert Livermore and Josefa Higuera Molina married.