Welcome to History Hub,
I usually check findagrave.com first and I found a Ferrante married couple, could they be your great grand-parents.
If not, would you want to share more information like birthdates, family membersand etc.
In the 1930 US Census he, his wife, and oldest child in the household are all listed as aliens (Al). If he was naturalized it would have Na or if he had filed his declaration of intention (first papers) it would have said Pa. Looking at family trees that include him no one seems to know where or exactly when he died other than it was during the 1930s. I very much doubt he became a citizen.