The Most Ancient Lives of Saint Patrick/The Life and Acts of St. Patrick/Chapter 103
The Footprints of Certain Virgins are impressed on a Stone.
And on a certain day the saint veiled and consecrated and espoused unto the heavenly Spouse four virgins standing on one stone. Then did an event marvellous and unwonted appear. Even unto this day are seen impressed on the hard stone the footprints of the virgins which were consecrated unto God, that to all it might be seen how deeply could the prayer or the preaching of the saint penetrate even stony hearts. And hereby may we understand that they who, for the love of Christ, contemn the world, should continue in the hard way, that they might attain Him unto whom they have approved themselves. And the place wherein these virgins were consecrated is called Tedna; and for the servants of the Lord is there builded a church, which at this day pertaineth unto the metropolitan seat of Ardmachia.