31Zucchelli, Christine. Stones of Adoration Sacred Stones and Mystic Megaliths of Ireland. Doughcloyne, Wilton, Cork: Collins, 2007. 144.
The author reported that accounts in hagiography and folklore assert that the saints and early missionaries left rounded stones as remembrances to the converted before leaving them to spread the faith elsewhere. "The stones preserved the essence of the saint and, following the saint's instructions on their proper use, enabled the community to communicate with the divine."