My Great Grandmother was Marianna DiCarlo, born in Corleone, dau of Domenica Campagna and Giacomo DiCarlo, son of Marianna Saporito and Giuseppe DiCarlo. I have the line further back, including detailed vital records from Corleone. I am also in contact with another DiCarlo relative who also has much info. I do not recall coming across the names Costenzio or Biagio though. Do you have any additional clues ?