The church in St Andrews Major was erected in the 13th century, from which the nave and chancel come from. In the fifteenth and sixteenth centuries, it was significantly enlarged by a northern nave, a porch and a tower added on the west side. In the eastern part of the northern nave there was a family chapel of Rowel and Bouville families, who were the owners of a large part of the parish. In the 19th century, a thorough renovation of the building was carried out.
The original church consisted of a rectangular nave and a narrower and lower, but also rectangular chancel on the eastern side. At the end of the 15th or the beginning of the 16th century, the northern wall of the nave was transformed into five arcades, which were opened on the new northern nave. It has reached the length close to the main nave and the chancel in total. In its eastern part there was a family chapel. From the west side a four-sided tower was erected, with a massive western buttress in the ground part and the top in the form of a parapet and crenellation on protruding corbels. The last element which was then added was the southern, rarely long, porch.
Website britishlistedbuildings.co.uk, Church of St Andrew A Grade II Listed Building in Dinas Powys, Vale of Glamorgan.