The McConaghy Estate

Historical marker location:
18701 Hesperian Boulevard, Hayward, California
( Marker can be reached from Hesperian Boulevard near Bookman Road, on the left when traveling south.)
Marker installed: 1986

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The state's name is derived from a novel called "Las Sergas de Esplandián," which was published in 1510. The book, written by Garci Rodríguez de Montalvo, tells the story of a mythical island called California that is ruled by Queen Calafia and is said to be filled with gold and precious stones.
Alameda County, located in the San Francisco Bay Area of California, has a rich history dating back thousands of years. The area was originally inhabited by Native American tribes, including the Ohlone people, who lived along the shores and in the hills of the region. They thrived on a diet consisting of fish, game, and a variety of plants.

In the late 18th century, Spanish explorers, led by Juan Bautista de Anza, arrived in the area. The Spanish established missions, including Mission San Jose, and began to establish settlements. The area eventually came under Mexican rule following Mexico's independence from Spain in 1821. During this period, the land was primarily used for cattle ranching and agriculture.

In the mid-19th century, the California Gold Rush brought a wave of settlers to the region, including Alameda County. Settlers came in search of gold, but many also recognized the potential for agriculture and industry in the area. The county became an important transportation hub with the construction of the Transcontinental Railroad and the Oakland Long Wharf, facilitating trade and commerce.

As the 20th century dawned, Alameda County experienced significant growth and development. The city of Oakland emerged as a major urban center, with a thriving port and a diverse population. The county also saw the establishment of various industries, including shipping, manufacturing, and automobile manufacturing. Alameda County played a pivotal role during World War II as a strategic military location, hosting naval bases and shipyards.

Today, Alameda County is a vibrant and diverse region, home to numerous cities and communities. It is known for its cultural institutions, tech industry, beautiful landscapes, and diverse population. The county continues to evolve, with a focus on sustainability, innovation, and quality of life for its residents.

This timeline provides a concise overview of the key events in the history of Alameda County, California.

  • 1853: Alameda County is created from a large portion of Contra Costa County
  • 1855: The city of Oakland is incorporated
  • 1868: The University of California is founded in Oakland
  • 1872: The first transcontinental railroad connection to the East Coast is completed in Oakland
  • 1874: The city of Berkeley is incorporated
  • 1900: The city of Fremont is incorporated
  • 1906: The devastating San Francisco earthquake also affects Alameda County
  • 1916: Alameda County courthouse in Oakland is completed
  • 1936: The San Francisco-Oakland Bay Bridge is opened
  • 1966: The Black Panther Party is founded in Oakland
  • 1970: The Alameda County Sheriff's Office is consolidated
  • 1997: The Lawrence Livermore National Laboratory opens in Livermore