Robert the Bruce.

[dibble1]

Why is Robert The Bruce so called in Scottish history? Why is it not just Robert Bruce?
Thanks in advance.

[hc4361]

There were three King Roberts in Scotland.
Robert the Bruce was born Robert Bruce and became King Robert I, the Bruce.
HIs daughter, Marjorie Bruce, was mother of King Robert II, the Stewart.

[Clanad]

Further, the chivalric history site for Family Bruce indicates the family originated near present day Brix (Bireux) in Normandy, between Cherbourg and Valognes. The family name was, therefore, "of" Bruis. The anglicizing of the family name (more accurately, Galicizing or Scotticizing) became "the" after their establishment in Scotland as probably a political consideration. Not unlike other famous names of the time... "Richard the Lionheart) (Couer de Lion) comes to mind. In fact King Robert's Grandfather, also by title Robert the Bruce (III) was also known as Robert the Competitor. The Robert name in the de Bruce family goes back at least to 1094...

[dibble1]

Many thanks to you both!