Buuxi weedhan soo socota: Ernst August Hagen wuxuu ku dhashay Königsberg, waqtigaas oo ahayd caasimada maamulka Bariga Prussia (iyo ku dhawaad toban sano kadib
1806 markii boqorku ka cararay Berlin, guriga Maxkamadda Prussian). Aabihiis, Karl Gottfried Hagen (1749-1829) wuxuu ahaa farmashiiste caan ah iyo farmashiistaha maxkamadda.