Johanna met Otto von Bismarck, then owner of Kniephof estate (
Konarzewo), in 1844. The Prussian Junker had associated with Pomeranian pietist circles around
Adolf von Thadden-Trieglaff (1796-1882), mainly because he had desperately fallen in love with Thadden's daughter
Marie. The young woman appreciated his advances, nevertheless, as she was already engaged to Bismarck's school friend
Moritz von Blanckenburg, she introduced him to her friend, Johanna von Puttkamer, at her wedding ceremony. However, not until the married couple took both Otto and Johanna on a journey to the
Harz mountains in 1846 did the two seem to become closer to each other. Marie's sudden death from meningitis in November 1846 tipped the scales and Bismarck finally asked Heinrich von Puttkamer for the hand of his daughter. ==Marriage and issue==