There is no good guess. However, I am scanning any deLucia records I see, so, if there is a link, I am sure it will show eventually. I frequently send you my scans to peruse for a link. Between the 2 of us, we will get it figured out.
I probably have a few scanned (unlinked) records that you have not seen. I will try to remember to send them to you to look at.
Researching surnames Ianniello, Tamburrino, Mattora/Martora/Mattori & Scialla in Santa Maria Capua Vetere, Caserta, Campania.