Kennedy spoke to his Mexican counterpart, Adolfo Lopez Mateos, who is a historical hero to Pena Nieto and was the subject of his college thesis.

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The identity of the "Gentleman" in the portrait is not known, but it is thought he may be Juan Mateos, the king's master of the hunt.

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The identity of the painting's subject is not known, but it is thought the balding, bearded man in a stiff, starched collar may be Juan Mateos, King Philip IV of Spain's master of the hunt.

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