i suppose this would help...
i do remember the courses i played..
waterville
dooks
ballybunion (both)
royal dublin
portmarnock
portmarnock hotel
royal county down
royal portrush
definitely not RCD or Portrush, too hilly for Royal Dublin...i remember every hole on waterville, ballybunion old, and portmarnock...so it has to be dooks, ballybunion new or portmarnock hotel.