 The 17th-century scholar John Colgan believed that a "Life" written for them had been witnessed in "c".1490 by Cathal Óg Mac Maghnusa (d. 1498), whom he regarded as the author of additions to the "Félire Óengusso" (see below).Although nothing of the kind has come to light, they do make cameo appearances in the "Lives" of two better known 6/7th-century saints, Áedan and Moling, both bishops of Ferns.