Free.
Now that I've got your attention, the freebie is Women of Scotland: A Journey to Scottish History.
Many of us have Scottish ancestors. And that means that at least one of them is almost certainly a Scottish woman, I think (I'm not exactly sure how that works, I flunked S*X 101 in high school

). Our family knows the last name of at least one of them, so that has to be pretty close relation.
237 pages.
There aren't enough ratings to satisfy my criteria--5 out of just 2 at Amazon; 4.17 at GoodReads, from only 6 ratings. However, I've decided that at least for this book, being the #1 sub-category best seller, twice, at the Kindle store, will equal 5 positive ratings each.
https://www.amazon.com/dp/B00C8CPTV8/.
If you find that this is a cut-and-paste ebook, please forgive. The publisher's name makes me think that it is a self-pub, indie, or whatever, so it's going on this thread, instead of the non-fiction thread, anyway.