Marjorie Bruce was named after her father's mother, Marjorie, Countess of Carrick. According to legend, Marjorie's parents had been very much in love, and Robert the Bruce did not remarry until 1302 (six years after his first wife’s death), to a courtier named Elizabeth de Burgh. On 27 March 1306, her father was crowned King of Scots at Scone, Perthshire, and Marjorie, then 10 years old, became a Princess of Scotland. Three months after the coronation, in June, 1306, her father was defeated at the Battle of Methven. He sent his wife, two sisters, and Marjorie north with his supporter Isabella MacDuff,
John de Warenne, 7th Earl of Surrey Scottish throne, accompanied him on his campaign in Lothian. Balliol created Warenne earl of Strathern, but this was in name only for the properties of the earldom were held by the Scots. Warenne died in 1347 and is buried at the monastery of Lewes. He was succeeded as earl by his nephew Richard Fitzalan, who was also earl of Arundel. On 25 May 1306 Warenne married Joan of Bar, daughter of count Henry III of Bar and Eleanor of England, eldest daughter of king Edward I of England. The two were soon estranged and lived apart, and had no children,