Exploring ancestral archives can be quite fascinating. For example, in the late 1580s my 10th great grandfather Juan Guerra de Reza married Ana de Arellano y Zaldívar, the granddaughter of Maria Onate Cortes Moctezuma and a prominent member of New Spain’s unofficial Aztec-Spanish royalty. De Reza came to the New World in his twenties and rose to the rank of General in his military service to the King of Spain. Maria Onate Cortes Mocezuma was the great granddaughter of Aztec Emperor Moctezuma II, and granddaughter of Hernan Cortes and Isabel Moctezuma.