In 1947 Trieste became a city state under the protection of the United Nations as the free teritory of Trieste. During this time, a lot of industry left Trieste because of the uncertain status of the city. As a result, after the final border was established in 1954, the influx of refugees couldn't find jobs, so many of them left for Canada, the US, and Australia 

After WW2, part of Italy became Yugoslavia, and the Italians had their rights and property taken away, and weren't allowed to leave the country. My Grand-Uncle Silvano Meier escaped with his wife illegaly by boat to Trieste, and wound up in Sydney, Australia. If they had been caught, they would have been shot, so they left their baby son, Dino, in the care of my Nonna Silvia for about two years. Eventually, nonna Silvia figured out a way to have baby Dino reunited with his biological parents.  Later on, when my Nonna had her own child, she chose to name him Dino, my dad. 

My Nonno and Nonna are married in Trieste, after Nonno Virgilio returned from Canada to marry my Nonna.  They thought that they might stay with the help of Silvia's aunt, but couldn't get it to work so my Nonno Virgilio returned to Canada, followed soon after by my Nonna Silvia.