Wow, I have to say what a great book for those who enjoy reading royal biographies and the connections from one royal family to another. The book is about King Christian IX of Denmark and how 5 of his 6 kids were able to eventually sit on the various thrones of Europe and countless more grandchildren and great-grandchildren have done the same.
At the time, Denmark was a rather small country, not very powerful or wealthy by any means. So then the next question is "how?", how did King Christian IX to become one of the most respected and consequential monarchs in Europe? Is it because he was exceedingly cunning and shrewd and pulled the right levers? The short answer is no and that he is actually one very lucky person. Take for example, his own ascension in 1863. He was not expected to inherit the Denmark throne except his uncle, the king at the time, did not have any children. Christian was chosen because he was the least offensive person (to the other European powers) that could take the throne and he was almost a "second option". His children were able to marry into some of Europe's most powerful royal families including the UK because they were basically attractive, kind and of royal blood.
All in all, a wonderful book and it even prompted me to purchase a number of the author's prior books. Now, that's a good compliment (along with recommending his work to other people).