John Greg Nichols was a businessman, builder, and politician.

He lived in the first brick house to be built in Los Angeles, California

Los Angeles, California

Los Angeles , with a population at the 2010 United States Census of 3,792,621, is the most populous city in California, USA and the second most populous in the United States, after New York City. It has an area of , and is located in Southern California...

, and was the third Mayor of Los Angeles

Mayor of Los Angeles, California

The mayor of Los Angeles is the chief executive officer of the city. He is elected for a four-year term and limited to serving no more than two terms. Under the California Constitution, all judicial, school, county, and city offices, including those of chartered cities, are nonpartisan...

 from 1852 to 1853 and again from 1856 to 1859.

His son was the first American to be born in the city, and he was the first mayor to expand the city.
John G. Nichols is interred in Angelus-Rosedale Cemetery, Los Angeles.