 The Otomis managed to remain relatively dominant in the Ixtenco /Huamantla area, but as vassals of the Tlaxcallan dominion, receiving land in exchange for military service.These same Otomi people were some of the first to fight Hernán Cortés’ initial incursion into central Mexico, and after defeat, allied with the Spanish to conquer the Aztecs .Ixtenco and the surrounding area was one of the first to receive evangelist Franciscans in 1529, with churches and monasteries quickly constructed.