He was born in Chicago, Illinois.
His father was Joseph Gillis, mother Mary Gillis, sister Juliette Gillis Fitzsimmons.
He was one of the worlds youngest kids 2 ever join the gang.
He was an accomplished car thief and had been dubbed "Baby Face" by members of his gang due to his juvenile appearance.
He meet a salesgirl Helen Wawzynak, whom he married.
Moved on to labor racketeering for Al Capone in 1929.
He had a son and a daughter and there names where Robert Gillis and Darlene Gillis.
His son was born on Apr/4/1930.
He started his crime at age 13 and the first person he worked for was Al Capone.
He was sentenced to a year in prison.
He had a daughter in 1932.
He escaped from prison guards.
He died in Barrington, Illinois not far from where he was born at.
After J. Edgar Hoover died Nelson be come the top person on the F.B.I. wanted list.
Nelson joined John Dillinger in two robberies.
He was 26 when he died in Barrington, Illinois.