Well it's a stretch. But the Australian singer's father was from Catania and maybe he was this guy. And maybe he was a bike builder some time in his life.

http://austcemindex.com/inscription.php?id=7407748
If you do the name search on that site, this guy's father is also named Alfio.

The time frame works and there is a resemblance between the two.
http://www.alfiomusic.com/alfio