I liked, though did not love, this book. It was an interesting overview of the time period and certainly brought the people and events alive. The author's characterization was rich enough to evoke admiration for the bravery and vision of the Scottish people and the leadership and character of Robert the Bruce.
The writing was good but not excellent; interesting but not riveting. Because of the disturbing elements : family killed, constant battles etc., I think the book would be too unsettling for younger children and would advise you to consider the sensitivity of your child in deciding if/when they are ready for this tale. That said, I know my children will long recall this period in history, thanks to The King's Swift Rider.