Here's a few more for you guys;

Pasquale - Patrick, Patty, Paddy
Pasqualino - Paddy, Lino
Andonio - Andrew, Andy
Simone - Simon
Saverio - Xavier, often times 'Sammy' is also substituted
Pietro, Pietrino - Peter, Pete
Vito - William or Billy
Guigeliemo - William, Billy
Ignazio - Ignatius
Angelo - Angel
Martino - Martin
Luigi, Luigino - Louis, Louie
Benedetto - Benjamin, Benny
Francesco, Franco - Frank,
Alfredo, Federico - Afred, Fred, Freddy
Ferdinando - Frederick, Fred
Frederico - Frederick, Freddy
Ottilio, Ottaviano - Otto
Gaetano - Thomas, Tommy
Tommaso - Thomas, Tommy
Alberto - Albert, Al
Giacomo - Jack, Jake
Gioacchino - Jack, Jackie
Filippo - Philip
Domenico, - Dominick, Nicky
Nicola, Nicolo - Nicholas, Nick
Ilario, Lorenzo - Lawrence, Larry
Matteo - Matthew, Matty
Paolo, Paolino - Paul
Raimondo - Raymond, Ray
Ugo - Hugh
Eduardo - Edward, Eddie
Alessandro - Alexander, Alex, Al
Alfonso, - Alphonse, Al
Carmina - Carmine, Carmen
Giorgio - George
Girolamo - Gerald, Jerry
Gerlando - Gerald, Jerry
Gerardo - Gerard, Jerry
Umberto - Herbert, Bert
Enrico, Rico - Henry, Harry
Aniello - Neal
Ettore - Edward, Eddie, Terence, Terry
Robert, Robertino - Robert, Bobby, Robby
Arturo - Arthur, Artie
Stefano - Stephen, Steve
Natale - Nathan, Nart
Camillo - Camille, Carmen
Bernardo - Bernard, Bernie
Carlo - Carl
Felice - Philip, Philly
Daniele - Daniel, Danny
Savino - Sam
Salvino - Sal, Sam
Cristoforo - Christopher, Chris
Andimo - Andy
Luciano - Louis, Lou
Virgilio - Virgil
Adolfo - Adolph, Al
Rudolfo - Rudy, Rudolph


Heres a few real tough ones that don't readily have an English equivalent (to the best of my knowledge) LOL

Generoso
Modesto
Mario
Ciro
Cosmo
Innocenzio
Sereno
Cirino
Gaspare
Rosario
Rocco
Nunzio
Orlando

Good luck with these fellas! LOL