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In this Spanish name, the first or paternal surname is de Mazariegos and the second or maternal family name is Guadalfajara.
For the conqueror of Chiapas, see Diego de Mazariegos y Porres.
Capitanes Generales de Venezuela en la Epoca de la Colonia. He and his Lt. Governor Juan Martinez left Spain in late summer of 1555 but were shipwrecked, Diego Mazariego Guadalfajara survived and later took his post as governor in 1556, Juan Martinez and his family drowned in the shipwreck.