Answer:

MORAN

AnswerCrossword Clue
MORANNoted Chicago gang leader
MORANGangland name
MORANNotorious Bugs
MORANErin ...
MORANFoe of Holmes
MORANCapone rival Bugs
MORANBugs the thug
MORAN1920's gangster Bugs
MORANBugs ... (Al Capone rival)
MORANCapone rival
MORANFormer "Entertainment Tonight" correspondent Julie
MORANBugsy of crime
MORANBugs once sought by cops
MORANErin of "Happy Days"
MORANBugs with weapons
MORANBugs or Erin
MORANActress Erin of "Happy Days"
MORAN"Happy Days" performer Erin
MORANBugs of the underworld
MORANErin who played the youngest Cunningham
MORANProhibition-era gangster Bugs
MORANActress Erin
MORANBugs with a gang
MORAN"Happy Days" actress
MORANTennis star Gussie
MORANCapone contemporary
MORANGangster Bugs
MORANPainter of the Yellowstone (1837-1926).
MORAN"Gorgeous Gussie."
MORANGussie, the tennis player.
MORAN... and Mack, one-time vaudeville team.
MORANWinston Churchill's physician.
MORANGussie of the courts.
MORAN"Gorgeous Gussie," of tennis.
MORANGussie of sports.
MORANTennis star and TV interviewer.
MORANOne of the Two Black Crows.
MORANLord ..., author of "Churchill."
MORANChurchill biographer.
MORANAmerican family of painters