Diana Gabaldon. Dragonfly in amber. Book 2. Time of battles (№ 427662)

"I think historians should irritate you some," Roger ventured to note. - And all the writers - they made him a hero. I mean, in Northern Scotland, you see images of the crown prince at every turn – whether it's a can of beer or a souvenir mug.
- No, not historians. Not them at all. Their greatest crime is that they allow themselves to express their opinions about events that they know only presumably, having in their hands only what history has deemed necessary to leave us. And only a few of them behind the smokescreen of false facts and papers see what really happened.