Richard of York Gave Battle In Vain

If you use the mnemonic for the colours of the visible spectrum and have wondered who Riard of York was, you can watch Benedict Cumberbatch play him http://www.bbc.co.uk/iplayer/episode/b07d3ks4/the-hollow-crown-the-wars-of-the-roses-3-richard-iii (UK only and for a couple of weeks more) To add to the confusion, he was Richard of the House of York, but in the play he is Richard, Duke of Gloucester!