Whakaotihia te rerenga e whai ake nei: Ko ia te tama a Hans Christoph von Gagern, minita o te kawanatanga i Nassau; i haere ia ki nga whare takaro i Kreuznach, Mannheim, me Weilburg, a i ako i te ture mai i te 1826 i Heidelberg, Utrecht, me Göttingen. Whai muri i tana noho ki Paris i te tau 1829 i whiwhi ia i tetahi tuunga i roto i te kaunihera o William I, Kingi o Netherlands. I te pakarutanga o te
Belgian Revolution (1830) i uru atu ia ki te ope taua o Netherlands hei kaiawhina me te uru ki te pakanga ki Belgium. I te tau 1833 ka reti ia mai i te mahi a te Netherlands, ka marena ki a Franzina Lambert, o The Hague, ka tiimata ki nga rangahau hitori kia pai ai ia mo te tuunga o Privatdozent i te Whare Wananga o Bonn. I noho ia ki Bonn i nga tau 1837-40. I te tau 1837, ahakoa he Porotetani tonu ia, i piri ia ki te Pihopa Nui o Cologne i hereherea, a Droste-Vischering, na reira i ngaro ai te manakohanga a te Kawanatanga o Prussia. I te tau 1840 i tohua ia hei kaiwhaiwhai minita me te taitara o Legationsrat na te Duke o Nassau.