Christian de Brus was the daughter of Marjorie, Countess of Carrick, and her husband, Robert de Brus, jure uxoris Earl of Carrick, and a sister of Robert the Bruce, King of Scots.
Background
Christina is thought to have married Gartnait, son of Donald, Earl of March (died 1305), but recently scholars have debated the truth of the claim, because Christina is never described as a countess of March, or even described as "of March".
Career
After defeat at the Battle of Methven on 19 June 1306, Robert Bruce headed west to the mountains. When Kildrummy was besieged, the women were forced to flee. Neil Bruce was captured and He was taken to Berwick to be hanged, drawn and beheaded.
The women made it as far as the sanctuary of Street Duthac at Tain in Easter Ross.
There they were captured by a Balliol supporter, Earl William of Ross, who handed them over to Edward I’s mentor Her first marriage was to Sir Christopher Seton, who was born in 1278 and executed in 1306.
She remarried in 1326 to Sir Andrew Murray, the posthumous child in 1298 of Sir Andrew Murray, a joint victor of the battle of Stirling Bridge along with William Wallace. Sir Andrew died in 1338.