The only time I've ever heard this name is on a Mexican telenovela I'm currently watching in which one of the characters' name is Ciro Palafox and I fell in love with it and that's what brought me here to find out what it means and its origin. I personally like the Latin American pronunciation more but I'm a little biased because I'm Latin American. I don't know why but I think this name would be perfect for a black and white tuxedo kitty. In fact, if I ever adopt another tuxedo cat I'm naming him Ciro.
The only time I've ever heard this name was online. An Italian guy I knew was named Ciro. It's a different name to me, especially as an American where the name is practically, if not ever used here.