Dusseldorf Panther (Germany) are the oldest American Football team in Europe, founded in 1979. There is Leagues all over Europe from Ireland to Russia, and Finland to Portugal.
Below you will find links to Irish connections in these Leagues:
Europe-wide Leagues:
World League of American Football 1991-1997
National Football League Europe 1998-2007
Home Nations American Football | Nations Cup 1996-2000
European National Leagues: