Merindad de Río UbiernaMerindad de Río Ubierna is a municipality located in the province of Burgos, Castile and León, Spain. According to the 2004 census, the municipality has a population of 1,389 inhabitants. Its seat is in Sotopalacios.WWW merindadderioubierna.comPeople from Merindad de Río UbiernaAndrés Díaz Venero de Leiva - Colonial governor of the New Kingdom of Granada.