When Monsignor Firrao, for reasons of health, was reassigned to Switzerland, Tria traveled with him to Lucerne.
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Later he served with Monsignor Giuseppe Firrao, the "Nunzio Straordinario" to the Court of Portugal.
Don Giovanni | Andrea Bocelli | Giovanni Pierluigi da Palestrina | Giovanni Bellini | Giovanni Riggi | Giovanni Boccaccio | Andrea Palladio | Andrea Mantegna | Giovanni Battista Pergolesi | Giovanni Battista Tiepolo | Giovanni Battista Guarini | Giovanni | Andrea de Cesaris | Giovanni Trapattoni | Giovanni "John the Eagle" Riggi | Giovanni Gabrieli | Andrea Mitchell | Andrea Doria | Andrea Alciato | Giovanni Falcone | Andrea Martin | Andrea Chénier | Villa San Giovanni | San Giovanni in Persiceto | Giovanni Verga | Giovanni van Bronckhorst | Giovanni Tamagno | Giovanni Pacini | Giovanni Battista Pescetti | Andrea Zittel |