One of my most important and original contributions has been my work on Richard III’s DNA. This arose out of the need to identify some remains in Belgium which were thought to be those of Richard’s sister, Margaret of York. As a historian and a writer I try always to be clear about what the evidence shows, and about what we know or don’t know. When we DON’T KNOW, but have to draw our own conclusions I try to tell my readers that this is what I am doing, and to explain where I am coming from. Too many historians, past and present, have misleadingly pretended to KNOW things which are really only their personal opinion, and to my mind this is not honest.