 Jacob Grimm lectured on legal antiquities, historical grammar, literary history, and diplomatics, explained Old German poems, and commented on the "Germania" of Tacitus.Grimm joined other academics, known as the Göttingen Seven, who signed a protest against the King of Hanover's abrogation of the liberal constitution which had been established some years before.As a result, he was dismissed from his professorship and banished from the Kingdom of Hanover in 1837.