My grandfather, Francesco Dato-Tessitore was the son of Cayetano (or Gaetano) Dato, born 7 August 1847, and Mariana Tessitore, born 26 July 1854. Francesco was born in Terranova de Sicilia. Probably his parents were too. Francesco, my grandfather, had four sisters, but no brother that I know of. Sisters' names: Emanuela, Gilda, Amalia, and Olga.
Emanuela married a Piazza, and they lived in Naples or thereabouts. Olga became a nun. I don't know anything about the other sisters.
Would like to hear from other descendants of DATO from Sicily, or descendants from Emanuela PIAZZA.