Non-fiction can be wonderfully entertaining (particularly periods such as the War of the Roses where so much happened in such a relatively short period) but some people like even more entertainment and so we have historical fiction (generally the emphasis is on fiction so take the history with a pinch of salt) for those people with regards to the War of the Roses can I recommend The Sunne in Splendour by Sharon Penman.
https://www.goodreads.com/book/show/119829.The_Sunne_in_Splendour