The Notre Dame Marching Guard tartan is recorded by the Scottish Tartans Authority. The notes on it say:
Notre Dame Marching Guard

Notes:
Lochcarron notes say designed by Robert O' Brian of the USA in 1996 which conflicts with the original note saying it was from a kilt exhibited by Jean Givler in 1995, who said it was 25 years old. Sample in STA Johnston Collection from Freida D. Donnan of University of Notre Dame1996.
See it here.