The Celtic support proved Aoibhe Byrne's family "will never walk alone" with its tribute to the late Carrickmacross teenager on Sunday.
That's according to Monaghan Town's Jim Greenan, whose viral tweet called for the fans to be upstanding in the 14th minute of a recent game against Rangers, in memory of 14-year-old Aoibhe.
Jim was at the game on Sunday and said he never doubted that the Celtic fans would follow through in the show of support.
He told Northern Sound that is was very emotional to be in the stadium:
Dermot Hand met Aoibhe and her family and through their mutual support for Celtic, and became close friends with the family.
He says Aoibhe would have been chuffed with the tribute and adds that it was a massive comfort to the family: