context: On the mother’s side, Mrs. Blavatsky’s lineage is attributed to Prince Serengov to Rurik, the founder of the Russian state in Novgorod. Madame Blavatsky was born in the Aikansenslav region in 1831, and her father, a German in the service of the Kaiser, was the ruler of a neighborhood, from the noble classes, and from the mother's side she was the granddaughter of Princess Helen Dujeroky, whose grandparents had close ties to the family Ruling.
question: Where was Helena Petrovna Blavatsky born?
answers.text: Aikansenslav region