For most of its history Semington was a chapelry within the ecclesiastical parish of Steeple Ashton. A chaplain was serving Semington by 1370. In 1470 a dispute was in progress between the vicar of Steeple Ashton and the inhabitants of Semington and Littleton about the cost of services there; as a result the bishop decreed that the vicar, or a suitable chaplain, should celebrate mass and vespers at Semington every Sunday and feast day. The inhabitants would pay 20 shillings per year to pay all the corresponding expenses, with the exception of the bread and wine. An annual payment of £6.10 was recorded in 1535 for the chaplain at Semington. In 1783 the vicar of Steeple Ashton lived in Surrey owing, it was reported, to ill-health; the curate lived in the village and held a service in Semington at 1.30 p.m. on Sundays. In 1831, the average net income of the vicar of Steeple Ashton was £852 per year, of which £100 was paid to the curate at Semington.