You've shared some excellent information. Writing to cemeteries is a great way to get lots of genealogy information. Hopefully, another D'Antoni researcher has connections with your line and can benefit from it and will provide even more information. Unfortunately, I have very little D'Antoni info.
The only D'Antoni in my line that I know of in the US was Greatgrandmother Biagia D'Antoni who may have been married to a first husband when she came from Sicily (possibly Corleone) and remarried Vincenzo Venturella after coming to the US.About 4 of their children were born in Louisiana.It appears that she had little or no contact with her family except for written correspondence with her sister Lucia in Corleone up until 1930.
I was told that a D'Antoni family was involved in some way with a freight company named Standard Fruit and Steamship in New Orleans up until the 1960's or 1970's. Can anyone shed some light on this?