 Word that the Council of the Indies in Spain would not agree to make encomiendas permanent led to a conspiracy to make New Spain independent of the mother country.In 1565, Martín Cortés, Marquess del Valle, son and heir of Hernán Cortés, and Luis, another son, were the leaders of this conspiracy.The plot was discovered and suppressed, and some of the conspirators, including the sons of Cortés, were arrested.