Historical Novels vs. Non-Fiction

I read very little non-fiction.  Generally, I find it dry, boring, difficult to concentrate on, and generally not very interesting. 

That is not always the case, but often so...

I do enjoy historical novels, however.  These contain a certain amount of historical facts blended with fictional characters and information. So, when I read these, I am disturbed because I find it difficult to distinguish between the fictional characters and the historical facts.  And, I question how accurate are the historical facts. 

But I like the genre nevertheless.

I guess if I really wanted to know, I could do my own research....