I am just back from Italy and found your interesting discussion on the forum. I have more on the Fancelli-Dini family.
According to my data Chiusa Dini was named Creusa at birth and Gigli was originally named Egidio Sebastiano. Could this be right? If yes, write me an e-mail and I give you more on the family. I do have a lot of info on the siblings of Creusa also. By the way as far as I can tell Creusa did not have a brother named Alberto.