Is Dylan Sprouse really from Italy?
Well, 'from' can mean several things.
If you mean it literally, then yes. They were born in Arezzo, Tuscany when their parents were living in the town as English teachers.
But if you mean it in the sense that they grew up there and are native to Arezzo, then no. When Cole and Dylan were 4 months old, their parents moved back to America (where they were originally from), and the twins grew up there. The only reason they have dual citizenship is because they were born in Italy, which is the law concerning Italian citizenship (as well as many other countries).