Shay Duffin Shay Duffin was the Irish actor and playwright who played Ned Quint in the seventh season episode in . He was born in Dublin , Ireland . He died from complications related to heart surgery at UCLA Medical Center in Los Angeles , California . He was 79 years old . Duffin regularly portrayed barkeep types , including the pubkeeper in the 1997 blockbuster " Titanic " and the brasserie bartender in the acclaimed 2006 crime film " The Departed " . He was perhaps best known for his role as Dan O ' Grady in the 1993 horror film " Leprechaun " . Duffin was also known for his one - man plays , including " The Importance of Being Irish " in the early 1990s ( which he also wrote ) and " Confessions of an Irish Rebel " in 2006 . Career . Television . Duffin made his television debut in the NBC movie " Law and Order " , which was directed by Marvin Chomsky . Teri Garr , and James Whitmore , Jr . also had roles in this movie . Later that year , Duffin appeared in an episode of the CBS television series " Switch " , along with Richard Lynch and George Murdock . He appeared in several more TV movies in the 1970s . He had a supporting role in 1978 ' s " The Other Side of Hell " , which also featured Richard Riehle and Morgan Woodward . This movie was co - written by Robert Hamner and its music was composed by Leonard Rosenman . Duffin also played Rabbi Bartholomew in 1979 ' s " Mary and Joseph : A Story of Faith " , which co - starred Stephen McHattie . Duffin ' s other TV movies during the 1970s included " The Amazing Howard Hughes " ( with Barry Atwater , Ray Buktenica , and Garry Walberg ) , " Captains Courageous " ( with Jeff Corey , Charles Dierkop , Ricardo Montalban , and Fritz Weaver ) , and " Marciano " ( with Barbara Baldavin , Richard Carlyle , Richard Herd , and Michael Pataki ) . In addition to TNG , Duffin appeared on such TV programs as " Dynasty " ( with Lee Bergere ) , " Cagney & Lacey " ( in an episode with Stanley Kamel and Don Stark ) , and " Murder , She Wrote " ( in an episode with George Hearn , Dakin Matthews , and Richard Riehle ) . He also had a role in the 1987 biographical TV movie " J . Edgar Hoover " , as did Walker Edmiston , Louise Fletcher , Robert Harper , Paul Kent , John McLiam , David Ogden Stiers , and Harvey Vernon . Duffin was a regular cast member on the short - lived 1990 series " City " , created by acclaimed writer Paul Haggis . Fellow TNG guest star Stephen Lee was also a regular on this series . Duffin later had a recurring role on another CBS series from Haggis , " Due South " , in 1995 . Films . Duffin ' s first feature film was the 1977 western " The White Buffalo " , in which Ed Lauter also appeared . Duffin was then one of the many " Star Trek " alumni to appear in the 1979 film " Butch and Sundance : The Early Days " ; his co - stars in this production included Peter Brocco , Jeff Corey , Christopher Lloyd , John Schuck , Vincent Schiavelli , Peter Weller , and Noble Willingham . That same year , Duffin was seen in the boxing film " The Main Event " ( with Earl Boen and James Gregory ) and the western comedy " The Frisco Kid " ( with Clyde Kusatsu , Vincent Schiavelli , and Ian Wolfe ) . Duffin was also seen in the 1978 short film " Mother , Juggs & Speed " with Jan Shutan . Duffin played a ring announcer in the acclaimed 1980 boxing film " Raging Bull " with a young McKenzie Westmore as Jake LaMotta ' s daughter . That film ' s director , , later cast Duffin as the brasserie bartender in 2006 ' s " The Departed " . The latter film ' s cast also included Mark Rolston . Duffin ' s only other film credits in the 1980s were the 1980 comedy " The Baltimore Bullet " ( which also featured Ed Bakey ) and the 1983 action thriller " 10 to Midnight " . In 1992 , Duffin had roles in the films " Memoirs of an Invisible Man " ( with Sam Anderson , Rosalind Chao , Ellen Albertini Dow , Aaron Lustig , and Michael McKean ) , " Newsies " ( with Gabriel Damon and Kevin Tighe ) , and " The Public Eye " ( with Ian Abercrombie , Bob Gunton , Richard Riehle , and Nick Tate ) . In 1993 ' s " Leprechaun " , Duffin plays Don O ' Grady , the character who locks the title character away and steals his bag of gold coins at the beginning of the film . The film ' s cast also included Mark Holton and Ken Olandt . Six years after appearing as the pubkeeper in " Titanic " , Duffin had a supporting role in the 2003 drama " Seabiscuit " . Both of these films co - starred Michael Ensign . " Titanic " featured Greg Ellis , Victor Garber , Tricia O ' Neil , and David Warner , as well , while David Doty , Ed Lauter , and Michael Buchman Silver were also seen in " Seabiscuit " . Duffin ' s last film was 2007 ' s " Beowulf " , which also co - starred Greg Ellis and regular Dominic Keating .