Dalry was mentioned in 1226 as a "chapel of Ardrossan". The parish of Dalry was probably formed in 1279 when a "Henry, Rector of the Church of Dalry" appears in the Register of the Diocese of Glasgow. Two places of worship in the parish appear by the late 13th century. One on the east bank of the River Garnock at Kilcush, and the other on the west, located near the Old Glebe. This was the main parish church, it almost certainly dedicated to St. Margaret of Antioch, a 3rd or 4th century virgin martyr.