sentences:  In the census of 1842, the town had were 138 homes and 550 residents.In the 19th century, the municipality expanded to include the localities of Acrijos, Armejún, Buimanco, Fuentebella, Peñazcurna, Valdemoro de San Pedro Manrique, and Villarijo.In the late 20th century, the municipality expanded to incorporate the localities of Matasejún, Valdelavilla, Sarnago, Valdenegrillos, El Vallejo, Taniñe, Las Fuentes de San Pedro, Ventosa de San Pedro, and Palacios.