Pedzisa mutsara unotevera: Ernst August Hagen akaberekerwa muKönigsberg, panguva iyoyo guta guru reEast Prussia (uye kweanenge makore gumi mushure me
1806 apo mambo akatiza muBerlin, musha wePrussian Court). Baba vake, Karl Gottfried Hagen (1749-1829) vaiva nyanzvi yemakemikari uye vaiva muchengeti wemishonga yomudare.