Planning for Honorable William Alexander Leidesdorff, Jr. Memorial Wreath Laying Ceremony

San Francisco, California prepares to remember Honorable William Alexander Leidesdorff Jr., 'African Founding Father of California"

Our America 250 Memorial Wreath Laying at Mission San Francisco de Asís, established in June 1776 connects with the birth of the United States of America.

San Francisco, CA — Civic leaders, historians, community organizations, State representatives, Federal representatives are invited to gather at Mission Dolores Basilica to honor William Alexander Leidesdorff Jr., one of the most influential figures in early California history, during our America 250 Memorial Wreath Laying Ceremony.

Recognized by the California State Legislature as the “African Founding Father of California,” Leidesdorff was a pioneering maritime captain, diplomat, entrepreneur, and one of the earliest civic leaders of San Francisco.

Born in 1810 in St. Croix to an African Cuban mother and Danish Jewish father he rose to prominence as a seasoned ship captain, international merchant and diplomatic statesman whose contributions helped shape the cultural, economic and political foundations of the State of California.

“Honorable William Alexander Leidesdorff Jr. stands as one of the most remarkable and overlooked architects of early California,” said Michael Harris, lead organizer for Leidesdorff Ranch & Public Policy Research Center. “His legacy reflects the rich ethnic diversity of our state, and his short life showcased the global forces that shaped its earliest development.”

Leidesdorff served as U.S. Vice Consul to Mexican California, documented the Bear Flag Revolt, and played a key role in the transition of California during the U.S.–Mexican War. As a businessman, he established major commercial ties across the Pacific Rim and captained the Sitka, the first steamship to navigate the Sacramento River—an achievement memorialized on the California State Seal.

In 1844, he received 8 Mexican leagues, roughly 35,521 acres he named Rancho Rio de los Americanos, land that today encompasses parts of City Rancho Cordova, City of Folsom and Sacramento County. He died in San Francisco on May 18, 1848, just days after receiving official reports of gold discovered on his vast American River property, discoveries that would soon ignite the California Gold Rush.

Today’s ceremony included historical reflections, proclamations, and the placement of a ceremonial wreath at his burial site inside Mission Dolores Basilica, where he has rested since 1848.

The event also highlighted ongoing efforts by the Leidesdorff Ranch & Public Policy Research Center to expand public awareness of his life and to promote California’s Pan‑African global trade, "California Grown" Food and Agriculture, and world class historical preservation initiatives.

“Honoring Leidesdorff is not only about remembering the past,” it is about recognizing and connecting the global Leidesdorff Legacy, a very diverse and high culture entrepreneurial spirit that continues to define California and our world.

About the Leidesdorff Ranch &
Public Policy Research Center
(Grand Opening Celebration - October 23, 2026
California State Capitol - West Lawn)

The Center is dedicated to preserving the legacy of William Alexander Leidesdorff Jr. and advancing research, education, and public policy initiatives related to California’s Pan‑African history, agriculture global trade, and economic development.