The findspot of two Bronze Age cremation urns, which were found in 1834, 10 metres to the southeast of the church. St Maughold's parish church occupies the site of a seventh-century Celtic monastery; its churchyard crosshouse holds nearly a third of all the pre-Norse cross slabs found on the Island, and three keeill ruins survive within the churchyard. The present church dates largely from the 11th-12th centuries, retaining 13th-century windows and 14th-century east-window stonework, and may have served as an 11th-century bishopric seat; it underwent major reconstruction in 1900. A 14th-century parish cross, formerly standing at the churchyard gate, was moved into the church for preservation in 1989. Canon Quine suggested the church's original dedication may have been to St Magnus rather than St Maughold.