Fernando de Alva Cortés Ixtlilxóchitl, more generally known as Fernando de Alva Ixtlilxochitl, born between 1568 and 1580, died in 1648, was a nobleman of partial Aztec noble descent in the Spanish Viceroyalty of New Spain, modern Mexico; he is known primarily for his works chronicling indigenous Aztec history. Source: Wikipedia (en)