These are their stories, stories of power, love, triumph, tragedy and honour, recounted through interviews and never before published letters, photographs and home movie footage, by over 30 members of the European royal family.
Anecdotes handed down through generations give insight into a Europe ruled by 'dynasty politics' where arranged marriages created alliances between countries.
In the Europe of the 1800s, Denmark, England, and Russia each have a childless king; all three need an heir to the throne. Speedily arranged marriages, births, and cunning strategies bring King Christian IX, Queen Victoria and Tsar Alexander II to the throne.