Medieval Irish literary sources include a number of legends relating to
idols purportedly worshipped by the pagan Irish prior to the coming of
Christianity. Of these the most famous is Crom Cróich of Mag Slécht,
identified as the ‘king-idol of Ireland’ in the pseudohistorical lore as well
as in the hagiography of Saint Patrick. This article traces the development
of the various traditions relating to Crom Cróich in the medieval literary
milieu and re-examines some of the evidence presented by previous
scholars in support of the view that these legends could refer to an actual
cult of a pre-Christian deity.