Luis Antonio Argüello was the first Californio (native-born) governor of Alta California, and the first to take office under Mexican rule. He was the only governor to serve under the First Mexican Empire and also served as acting governor under the subsequent provisional government, which preceded the First Mexican Republic.
Grave of Luís Antonio Argüello at Mission San Francisco de Asís (Mission Dolores) cemetery, San Francisco.
Stylized portrayal of the original Mission San Francisco Solano
Alta California, also known as Nueva California among other names, was a province of New Spain formally established in 1804. Along with the Baja California peninsula, it had previously comprised the province of Las Californias, but was made a separate province in 1804. Following the Mexican War of Independence, it became a territory of Mexico in April 1822 and was renamed Alta California in 1824.
Misión de Nuestra Señora de Loreto Conchó was the first mission established in the Californias (present-day Loreto, Mexico) in 1697.
Mission San Carlos Borromeo de Carmelo, established in 1770, was the headquarters of the Californian mission system from 1797 until 1833.
Mexico in 1838. From Britannica 7th edition.