'This impressive book [...] is as comprehensively rigorous on the research methods employed to investigate this taboo as we might expect from the National Folklore Commission, and Ní Fhloinn's survey turned up a vast wealth of new material which she works carefully into the historical overview. This important survey has all the feel of a future standard reference work, thanks in part to Ní Fhloinn's appeal to study belief precisely because it is representative of the intangible and quotidian', Paul Cowdell, The Folklore Society, UK (2019).