A chapel dedicated to St Monan was built in the early 13th century. This was replaced by the present building in the 14th century by order of King David II. Master of Works and builder was Sir William Dischington between 1362 and 1370. The church was set on fire in the 16th century, when the English raided the area and left in a ruinous state, although services were still held in the chancel. Some restoration work was carried out in the 18th century and again in the early 19th century, when it was completely restored. It has undergone a number of changes through time, which can be seen by the blocked windows in the north and west walls of the chancel and blocked door behind the organ in the east wall. The line of a gallery can also be seen in the walls of the north transept. The walls are now heavily lime-washed, or painted over in white, which is 'bubbling' in some lower level courses, making recording of marks difficult. A total of 51 marks of 15 different masons have so far been recorded.
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