Philippa Gregory said this quote
“ I do think your brother grows more peculiar every day,' I complain to Edward when he comes to my rooms in Whitehall Palace to escort me to dinner.'Which one?' he asks lazily. 'For you know I can do nothing right in the eyes of either. You would think they would be glad to have a York on the throne and peace in Christendom, and one of the finest Christmas feasts we have ever arranged; but no: Richard is leaving court to go back north as soon as the feast is over, to demonstrate his outrage that we are not slogging away in a battle with the French, and George is simply bad tempered. ”