Niezychowski's father died when he was nine years old. Two years later, his mother, now 37-years old, married the 29-year-old Count Rodryg Dunin, and had four more children. They lived on the Granówko estate, near Poznań. Niezychowski was educated at the German military school at Wahlstadt, Silesia, and at the naval schools at Danzig (Gdańsk) and Kiel. His oldest brother Count Josef von Niezychowski initially attained high rank in the German Army, but at the outbreak of World War II changed his allegiance and served as a General in the Polish Army. [1]