Electress n. : The wife or widow of an elector in the old German empire.

Example:
Why do you get English Citizenship if you are a decent to Sophia Electress of Hanover? ?

Taxonomy
Electress of Brandenburg, Husband, Elizabeth, Electors, consorts, Bavaria, Palatine, Queen, Württemberg, Queen in Prussia, Queen of Prussia, free encyclopedia, spouses, Sophia, 1776, Caroline, Agnes, Saxony.

Defination from the web:
Electress (German: Kurfürstin, Latin: electrix) was the consort of an Elector of the Holy Roman Empire, one of the Empire's greatest princes. ... Persons using or entitled to use the title of "Electress" are listed below. ...