Tigernach of Clones was a 6th-century Irish saint and abbot who served as the patron of Clones in County Monaghan. Born to a daughter of the Uí Chremthainn king and a warrior from Leinster, he was named by Brigit of Kildare. After studying in Britain, he returned to his ancestral lands in Ulster. He eventually established several foundations, including Galloon and Clones, where he lived a hermit-like existence before passing away from a plague in 549.