Eleonora is also the German form of this name. There have been several German princesses and an Austrian empress (Eleonora Magdalena von der Pfalz-Neuburg, lived 1655 - 1720) with this name. [noted -ed]
Quite pretty, it's become something like "Isabella" in the sense that it's cliche and affected, any European, classic-sounding, palatable name that authors give their teen romance protagonists. Like a buzzword. I much prefer Eleanor, because it maintains the melody but without the pretense.