Pioneer William Workman lived here. Workman and co-owner John Rowland developed the 48,790-acre La Puenta Rancho. Workman and co-leader Rowland organized the first wagon train of permanent eastern settlers, which arrived in Southern California on November 5, 1841. Workman first began this home in 1842, then remodeled it in 1872 to resemble an English Manor House.