The Royal Inniskilling Fusiliers were formed in 1881 and their RHQ was in Enniskillen, Co. Fermanagh, which is part of Northern Ireland. In 1961 they amalgamated with the Royal Ulster Rifles and the Royal Irish Fusiliers to become the Royal Irish Rangers. Then again in 1992 they merged with the UDR (Ulster Defence Regiment) to form the Royal Irish Regiment. Their pipers did (and still do) wear saffron.

I have a saffron kilt which I enjoy wearing very much. I believe the Stillwater Saffron kilts are actually a "shadow tartan"?