Walter fitz Alan in the context of "North Kyle"

The House of Stuart, originally spelt Stewart, also known as the Stuart dynasty, was a royal house of Scotland, England, Ireland and later Great Britain. The family name comes from the office of High Steward of Scotland, which had been held by the family progenitor Walter fitz Alan (c. 1150). The name Stewart and variations had become established as a family name by the time of his grandson Walter Stewart. The first monarch of the Stewart line was Robert II; he and his descendants were monarchs of Scotland from 1371 and of England, Ireland and Great Britain from 1603, until 1714. Mary, Queen of Scots (r. 1542–1567), was brought up in France where she adopted the French spelling of the name Stuart.

In 1503, James IV married Margaret Tudor, thus linking the reigning royal houses of Scotland and England. Margaret's niece, Elizabeth I of England died without issue in 1603, and James IV's and Margaret's great-grandson James VI of Scotland acceded to the thrones of England and Ireland as James I in the Union of the Crowns. The Stuarts were monarchs of Britain and Ireland and its growing empire until the death of Queen Anne in 1714, except for the period of the Commonwealth between 1649 and 1660.

Renfrew Castle was situated at the royal burgh of Renfrew, Scotland, which is near the confluence of the River Clyde and the River Cart. The original 12th-century castle was built by Walter fitz Alan, upon a river islet known as the King's Inch. This was replaced in the 13th century with a new castle by the road to the Clyde ferry, which became a royal castle under King Robert II. In the 15th century, the King's Inch site was rebuilt as Inch Castle by Sir John Ross. Both castles were demolished in the 18th century and nothing remains above ground at either site.