Unreal stories, I wonder what we dont really know :P

The king don from NY
http://www.trutv.com/library/crime/gangsters_outlaws/mob_bosses/gotti/index_1.html

Born Maier Suchowljansky in Russia to Jewish parents in 1902, Lansky moved to New York when he was 9. He met Charles Luciano when they were just schoolboys. Luciano demanded protection money from Lansky, and when he refused to pay, the two boys fought. Impressed by Lansky's toughness, Luciano befriended the younger boy and the two remained lifelong friends. Lansky also met Bugsy Siegel when he was a teenager, and the three formed a powerful partnership. Lansky and Siegel formed the Bug and Meyer Mob, which became Murder, Inc.

Charlie "Lucky" Luciano (1897 - 1962) Salvatore Lucania was born in Sicily in 1897, but his family moved to New York nine years later. At a young age, he became a member of the Five Points gang, in which Al Capone also received his education. Five years after establishing an empire based mostly on prostitution, Luciano controlled the racket all over Manhattan. After a failed but brutal attack on his life in 1929, Luciano started planning the National Crime Syndicate, an extension of Salvatore Maranzano's Commission, with Meyer Lansky.

Born in New York in 1928, Vincent Gigante was quite a character. He dropped out of high school in the ninth grade and started boxing, winning 21 of 25 light-heavyweight bouts. By the time he was 17, he had turned to crime to support himself, which resulted in seven arrests before he was 25.
http://en.wikipedia.org/wiki/Vincent_Gigante