What makes this one in the Desart Demesne area of County Kilkenny quietly peculiar is that it is said to have moved. Not metaphorically, not through a confusion of names on a map, but in the folk understanding of the place: the well itself departed.

The account comes from William Carrigan's 1905 history of the diocese of Ossory. He records that St. Feichin's holy well originally sat beside the saint's church at Cill-Feichin, but that following some unspecified act of profanation, it "removed thence" and broke out again roughly half a mile to the south-west, in the townland of Riesk, where it became known as Desart Well. The idea of a sacred spring relocating in response to desecration is a recurring motif in Irish hagiographic tradition; wells were understood to be spiritually sensitive things, capable of withdrawing their favour. St. Feichin himself was a seventh-century abbot associated primarily with Fore in County Westmeath, though dedications to him appear in scattered places across the country, suggesting the reach of his early cult. What profanation prompted the supposed departure here, Carrigan does not say.

Both the original site beside the church and the later position in Riesk are now of uncertain location. No precise coordinates have been established for either, which means the well exists largely as a story rather than a place one can stand beside and inspect.