- Illinois--Chicago1
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- Isidore, of Seville, Saint, -6361
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- Jiménez de Cisneros, Francisco, 1436?-15171
- John II, King of Aragon, 1397-14791
- Juana, of Austria, Princess of Portugal, 1535-15731
- Latin language1
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- Margarita, de Austria, Queen, consort of Philip III, King of Spain, 1584-16111
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