My apologies to Network membersfor addressing this query in English.
My grandfather(Alfred Edgar NIBLETT, 1888-1973) was one of 11 children– all born in Osnabrueck - of an English father (Charles James Niblett,1851-1927) and a German mother (Anna KarolineNiblett, nee BORSTELMANN (1853-1938). They married in Elze, Hannover, in 1873. She was born in either Elze or Glocksee (the official records differ).
I should be gratefulif anyone could advise me on the civilian statusof Anna Karoline Niblett after her marriage, as I have come across different interpretations of this.
I have read that, afterGerman unification in 1871, Bismarck passed a law that meant that anyonemarrying a foreigner automatically lost his/her German citizenship.
However, Wikipediastates that citizenship was determined by the State in which one was born -rather than at the federal level - until the Nationality Law of 1913.
Separately, I amaware that one of my grandfather’s sisters was naturalised in 1914. I assume that this meant that either shechanged from English to German citizenship or took on dual nationality (if,indeed, the latter were possible at that time).