Vito=Don Clericuzio (Shame on me for forgetting the name)
Sonny=Silvio
Michael=(Loosely) Pippi DeLena, more likely Cross
Vincent=(Loosely) Dante
Fredo=Petie or Vincent( I forgot which one)
Hagen=Giorgio
Pentangelli=Ballazzo
Luca Brasi=Lia Vazzi
Kay Adams= (Loosely) Athena
Tattaglia/Barzini/Cuneo/Stracci/Greene=(loosely) Santadios
Roth/Klingman=(Loosely)Gronevelt
Young Mary=Bethany (handicapped/Autistic)
Connie=Rosemarie
Carlo=Jimmy Santadio
McCluskey=Losey

Also Dante vs. Cross could be like Vincent vs. Anthony

Any more?

Anybody wanna get Omerta/Sicilian/Family likenesses up here as well?