This is my great grandfather
Francisco de Haro (1792 – November 28, 1849)
was a Californio* politician, soldier, and ranchero, who served as the 1st and 5th Alcalde of San Francisco (initially known as Yerba Buena). He notably commissioned the first land survey of San Francisco to Jean Jacques Vioget in 1839.
*Californios (singular Californio) are Hispanic Californians, especially those descended from Spanish and Mexican settlers of the 17th through 19th centuries before California was annexed by the United States.
De Haro Street, in the Potrero Hill neighborhood of San Francisco, is named after him.
Additionally, the San Francisco Dons have a mascot called Don Francisco that is based on him.
https://en.wikipedia.org/wiki/Francisco_de_Haro