You can help expand this article with text translated from the corresponding article in Spanish. (June 2018) Click [show] for important translation instructions.
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You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Spanish Wikipedia article at [[:es:Alonso I de Fonseca]]; see its history for attribution.
You may also add the template {{Translated|es|Alonso I de Fonseca}} to the talk page.
