Set in the storied landscape of southern Arizona, the documentary “Munguía Rancher – San Pedro River Valley” explores the enduring legacy of mestizo families who shaped the region’s ranching heritage along the San Pedro River. The film centers on Don Tomás Munguía, a 19th-century rancher whose lineage traces back to Tubac soldier Juan Manuel Ortega who was honored at the Tubac Presidio in 2018 by the Sons of the American Revolution and buried beneath St. Ann’s Church. Presented by Monica Dunbar Smith, descendant of both Munguía and Ortega.