Christian Bruce , also known as Christina de Brus, was a 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. It is presumed that she and her siblings were born at Turnberry Castle in Carrick. Wikipedia*
On the C-SPAN Networks:
Christian Bruce has one video in the C-SPAN Video Library; the first appearance was a 2004 Rally.