I've recently learnt about Eleanor of Aquitaine while reading Europe: A History by Norman Davies.

My wife is really interested in these kind of strong women in history, so I am looking for a present for her to read more about Eleanor. I've found a couple history books on the subject, but not sure which one is a good one.

It's really important to get a good history book because you don't want the story to be one-sided or biased.

Forgive me if that's not a correct question for this subreddit. I just noticed that people always give good sources when answering questions, so I thought you know your way around history books.