The Estudillo family was prominent in California history, and consisted of:
José María Estudillo, the patriarch of the family
José Joaquin Estudillo, eldest son of José María, and founder of San Leandro, California
José Antonio Estudillo, youngest son of José María, and prominent citizen of San Diego, California. Additionally, his house, called the Estudillo House, is a U.S. National Historic Landmark
José G. Estudillo, son of José Antonio, California State Treasurer