The Hayes House was built in 1887 for Reverend George Finley Bovard who later became the fourth president of the University of Southern California. Milton Scott Wilson purchased the house in 1893. He served as Justice of the Peace for the San Gabriel Township and many weddings took place n his parlor. In 1904, his daughter, Mary Leticia, married Edwin Hayes who helped organize the first San Gabriel City Council and the San Gabriel Union Church.