 The attribution of "Hib" to these two men is problematical, however, because it is based solely on a garbled colophon found in a ninth-century manuscript from Brittany with a Corbie and Saint-Germain provenance (now in Paris, Bibliothèque nationale, Lat.12021).The earliest manuscript witness, according to Rob Meens of Utrecht University, is an early eighth-century collection preserved in Copenhagen (KB 58); Meens in fact refers to the manuscript as a "forerunner" of the "Hibernensis".