 Meanwhile, Wilhelm had obtained a job at the Kassel library, and Jacob was made second librarian under Volkel in 1816.Upon the death of Volkel in 1828, the brothers both expected promotion, and they were dissatisfied when the role of first librarian was given to Rommel, the keeper of the archives.Consequently, they moved the following year to Göttingen, where Jacob was appointed professor and librarian, and Wilhelm under-librarian.