"Fresnillo de las Dueñas es una localidad y municipio situado en la provincia de Burgos, comunidad autónoma de Castilla y León (España), comarca de La Ribera, partido judicial de Aranda de Duero, ayuntamiento del mismo nombre."
"Fresnillo de las Dueñas is a municipality located in the province of Burgos, Castile and León, Spain. According to the 2004 census (INE), the municipality has a population of 349 inhabitants. On 1 February 1095, Count García Ordóñez and his wife, Infanta Urraca Garcés, sister of Sancho IV of Navarre, granted a fuero of privileges to Fresnillo, then a part of their lordship centred on Nájera."