Celtic University is a fictional school in Jane Stain's Dunskey Castle series of Time Travel Romance novels: Tavish, Seumas, and Tomas. Her heroines Kelsey Ferguson and Sasha Swain earned their doctorates there in Celtic Artwork and Celtic Archaeology. Along with their degrees, the university awarded them silver class rings, hand wrought into intricate Celtic knots. As part of their required coursework, Kelsey and Sasha studied Celtic fairy tales.
This ring is much like those Kelsey and Sasha received.