San Francisco founded by Francisco Palóu
Etymology
San Francisco, which is Spanish for "Saint Francis", takes its name from Mission San Francisco de Asís, which was named after Saint Francis of Assisi. The mission received its name in 1776, when it was founded by the Spanish under the leadership of Padre Francisco Palóu. The city has officially been known as San Francisco since 1847, when Washington Allon Bartlett, then serving as the city's alcalde, renamed it from Yerba Buena (Spanish for "Good Herb"), which had been name used throughout the Spanish and Mexican eras since approximately 1776. The name Yerba Buena continues to be used in locations in the city, such as Yerba Buena Island, the Yerba Buena Center for the Arts, and Yerba Buena Gardens.
Bay Area residents often refer to San Francisco as "the City". For residents of San Francisco living in the more suburban parts of the city, "the City" generally refers to the densely populated areas around Market Street. Its use, or lack thereof, is a common way for locals to distinguish long time residents from tourists and recent arrivals (as a shibboleth).
San Francisco has several nicknames, including "The City by the Bay", "Golden Gate City", "Frisco", "SF", "San Fran", and "Fog City"; as well as older ones like "The City that Knows How", "Baghdad by the Bay", or "The Paris of the West". "San Fran" and "Frisco" are controversial as nicknames among San Francisco residents.