Grazia Silverio was a female Europani Human who lived in the 24th century. In the 2370s, Silverio was the President of Europa Nova.

In 2376, during the Gateways Crisis and when theta radiation threatened Europa Nova, Silverio worked with Starfleet and the Bajoran Militia during the evacuation of the planet, including obtaining arithrazine to treat radiation poisoning. President Silverio was reluctant to allow the Trager to assist in the evacuation due to past Cardassian aggression against Europa Nova, but was persuaded by Kira Nerys to allow them to participate. When the evacuation of all Europa Nova residents was complete, Silverio was the last to leave the planet, boarding the USS Intrepid. (DS9 - Gateways novel: Demons of Air and Darkness)

President Silverio spent the next several months on Bajor while the radiation dissipated to safe levels. On the eve of her return to Europa Nova, Shakaar Edon announced that the Bajorans planned to provide the Europani with a variety of foods, including katterpods, kava nuts and pooncheen fruit. (DS9 - Mission Gamma novel: Twilight)

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