This broken slab was found in 1900 towards the west end of the south wall of the church. It bears on one face part of a regular curved cross set within a circle. In the top right-hand corner is the only Manx example of the Greek letter 'Omega', which would have been paired with an 'Alpha' in the top left of the complete panel. Its proportions - when complete - suggest that it may possibly have been an altar front. The use of the first and last letters of the Greek alphabet - 'the beginning and the end' - is a common Early Christian motif.