 The first Spanish viceroy, Don Antonio de Mendoza has his name given to the title of an Aztec manuscript Codex Mendoza, that enumerates in glyphic form the types of tribute goods and amounts rendered from particular indigenous towns under Aztec rule.The earliest holders of encomiendas, the encomenderos were the conquerors involved in the campaign leading to the fall of Tenochtitlan, and later their heirs and people with influence but not conquerors.Forced labor could be directed toward developing land and industry in the area the Spanish encomenderos' Indians lived.