Castle Roy is one of the oldest castles of its type in Scotland unique in that it is largely unaltered, whilst most other castles have been extensively modified over the centuries. The castle is thought to have been built at some point in the early 13th century, replacing an earlier wooden motte and bailey keep of Norman influenced design. In accordance with its early design it is one of Scotland’s simplest forts consisting of four curtain walls, about 7 ft. thick, forming a square. Presumably the walls defended a number of timber buildings which have since disappeared. One theory is that Castle Roy was built by James, son of the Earl of Mar, in 1226, after having receiving the title of Lord of Abernethy from King Alexander II. It may have become a residence of the powerful Comyn family, rivals of the famed King Robert the Bruce.
In 1548 the Castle was named in the Charter of the Earldom of Moray and therefore possibly it was still in use, although in the era of gunpowder will only have been of use as a fortified shelter.
References:Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).