The Kid was born as Stuart Errol Ungar in New York City on September 8, 1953 with a Jewish father named Isadore “Ido” Ungar. His father ran a bar named Foxes Corner which also became a gambling establishment that exposed Stu in gambling world at a very young age. Ido tried to keep away his son from gambling as he seen from his customers the bad effect of this addiction. But despite of this, Stu played underground gin and made his mark on this kind of game.
