Lettopalena is a little town in province of Chieti - Abruzzo Region - Italy. In my village, S. Vito Chietino also in province of Chieti, came a family from Paglieta (Chieti) whose last name was Canzano. I don't konow if there is a link with your ancestors but I can explain you the origin of the last name. As many last names it is a "patronimic" that is a last name coming from a surname. Canzano is a surname and in Paglieta there is a Church where there is a statue of Sint Canziano or Canzano.