" It was while he was on the tower that
Robbie came to the rampart beneath.
'I want you to look at this,' Robbie called up to him, and flourished a newly painted shield. 'You like it?'
Thomas peered down and, in the moonlight, saw something red. 'What is it?' he asked. 'A blood smear?'
'You blind English bastard,' Robbie said, 'it's the red heart of Douglas!'
'Ah. From up here it looks like
something died on the shield. "

― Bernard Cornwell , Vagabond (The Grail Quest, #2)