One tends to remember an Empress of Austria more than a Princess of Thurn and Taxis. But Helene in Bavaria led a much happier life away from the imperial throne.
Helene in Bavaria: The Sidelined Sister
Empress Sisi: Miserable Empress, Beautiful Queen
Empress Sisi had a very long and very miserable life at the Austrian court, becoming Empress at just fifteen, even though she never wanted the role.
The Royal Women 