High Quality Content by WIKIPEDIA articles! Robert V de Brus (Robert de Brus), 5th Lord of Annandale (ca. 1210 – 31 March or 3 May 1295), was a feudal lord, Justice and Constable of Scotland and England, a Regent of Scotland, and a leading competitor for the Scottish throne in 1290/92 in the Great Cause. His grandson Robert the Bruce eventually became King of Scots.