Reuben Percy and Sholto Percy, The Percy Anecdotes (1820)
“ Catherine Douglas, one of the queen's maids of honour, ran to bolt the outer door of the chamber; but she found the bar had been taken away by Robert Stewart, in order to facilitate the entrance of the murderers. Without hesitating a moment, this faith- ful lady thrust her arm into the staple; but, alas! what could the slender arm of a delicate woman avail against a numerous band of powerful ruffians! They burst open the door, shattered in pieces the arm which generously strove to oppose their way, and rushed sword in hand upon the king. ”
