I'm thinking of writing in the 1930's New York. I've been researching a lot about the Mafia in the 1930's so I know what I'm dealing with. My main character is going to be a mafiosi, and there's going to be a lot of dealing with the Mafia families. I was wondering if I should base the families off of the Five Families of the time. I'm leaning away from that, but do you think that ditching the Five Families would tick people off? In my story, would it be okay if these historical figures didn't exist? I'm always iffy about writing historical fiction because I'm not sure how much history I can ditch to make a truly interesting and unique story. So... do you think I should take a lot of leeway with the Five Families, or do you think it would be okay if I throw the Five in the trash bin and make up my own mafia families? Do writers have that much creative liberity when writing historical fiction? It is already going to be on the supernatural side.