Hey Guys,
Franz Joseph I of Austria had 3 children who survived past infancy, two girls and a boy, now I don't think it's too much of a stretch of the imagination that Rudolf, the son, could be born as a girl, or be a stillborn child etc.
So, if that had happened and Franz Joseph I had no sons, what would happen? Who would take the throne after Franz Joseph I? Who would Archduchess Sophia be married to etc.?