The 12th century building was a simple oblong structure, very thick walled, and with no windows in the north wall, as in other ancient Manx churches. Much of this structure remains today in the north and eastern parts of the church, and can be traced as a low foundation-course, now grass-grown, outside the east end.

The entrance to this early Church was by way of a door in the south wall, near to the south-west corner. The site of this door  can be seen in the outer south wall.

There are also Manx crosses dating from the 7th century. The best-preserved of these had been used as a door lintel, and was only discovered when the doorway was heightened.

There is a leaflet freely available in the church outlining the history of the old church.

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