The Anza Expedition and Spanish Colonization of Alta California, 1769-1776

Juan Bautista de Anza National Historic Trail

Special Event
  • Jan 31, 2026 at 1:00 PM
  • Free

Part II: Joaquin Ysidro de Castro

Saturday January 31 at 1:00 pm, Presenter:  Roxy Miraválle

Pvt. Joaquin Ysidro de Castro, patriarch of Francisco Castro (grantee of Rancho San Pablo) and his ties to the Anza Expedition.

As the soldiers of Anza’s expedition were the founders and first settlers of Alta California, it becomes a matter of historical importance to know who they were. They left their imprint on the civilization of California, and their names are as familiar as household words to all who know the state’s history. One of these early pioneer soldiers was a recruit named Joaquín Ysidro de Castro, patriarch of the grantee of our own San Pablo rancho. Castro and the family which accompanied him on this expedition are among the founding settlers of the Presidio de San José, which were established as a result of this expedition.

For special accommodations, please give the library 72 hours notice. Light refreshments provided with the generous support of Friends of El Sobrante Library.

More information

Fees

This event is free to attend.

Location

El Sobrante Library 4191 Appian Way El Sobrante CA 94803

Latitude and Longitude 37.967326, -122.309741

Schedule

Date:

Jan 31, 2026

Time:

1:00 PM

Duration:

1 hour

Contact Information

Vi Truong
(510) 374-3991
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Event Type

  • Partner Program
  • Talk
Tags: anza 250, contra costa county, el sobrante, northern california