The Mexican land grant Rancho La Puente was granted by Governor Juan B. Alvarado to John Rowland in April 1842, totaling about . Three years later, Governor Pio Pico amended the grant, enlarging it to nearly and adding William Workman as a co-owner. In 1868, after they received their federal land patent the prior year, Rowland and Workman divided Rancho La Puente, with Workman largely taking the western and central portions and Rowland the northern, southern and eastern sections, including what became most of Rowland Heights. The east section of Rowland Heights, between Nogales Street and Brea Canyon Road, falls within Rancho Rincon de la Brea. The ranch of Rowland's grandson, John A. Rowland III was behind the 99 Ranch Market near the corner of Gale Avenue and Nogales Street and the Rowland family owns part of that property today, leasing most of it for commercial use. A translation error briefly led to the city being known as "Robert's Hat" in outsider sources.