Johann Peter Friedrich Ancillon was a Prussian historian and statesman. He provided Frederick William III of Prussia with strong ideological support against political reforms that might restrain monarchical power.
Friedrich Arnold Brockhaus was a German encyclopedia publisher and editor, famed for publishing the Conversations-Lexikon, which is now published as the Brockhaus encyclopedia.
Friedrich Benjamin Graf von Lütke, more commonly known by his Russian name Fyodor Litke, was a German-Russian navigator, geographer, and Arctic explorer. He became a count in 1866, and an admiral in 1855. He was a corresponding member (1829), Honorable Member (1855), and President (1864) of the Russian Academy of Science in St. Petersburg. He was also an Honorable Member of many other Russian and foreign scientific establishments, and a corresponding member of the French Academy of Science in Paris.