Look up on my heritage Diego Quattrociocchi married to Silvana (I think it got turned into Sylvania after, the y it’s not used much in the Italian alphabet). They might have something to do with your family tree

Hi!
If the death is before ~1910 I would advice using “portale antenati” and putting Catania as location.

If it’s more modern and you have all the needed information and don’t mind spending 40 bucks then you can try visureinrete.it