His birth name was actually Conway, which is the name they used for Burke in the movie.
Not true - The real name was Burke. They had to use Conway in the movie because of Burke's daughter trying to extort the studio to use the real name. In the end, they told her to go jump off a bridge and used Conway.
According to the recent "Mobsters" episode from the other night, Conway was the birth name and Burke was the last name Jimmy chose to go by for the rest of his life. He was bounced around from dysfunctional foster families and the Burke family was the one that treated him the best thus the last name. Again, this is what was reported in the "Mobsters" episode from the other night. Which was very good! It filled in a lot of blanks from the "Goodfellas" movie.
