The Hanoveran Duchy of Bremen, including the already existing municipalities now component of Grasberg, changed occupation several times during the Napoléonic Wars.
Hannoveri Bremeni hertsogkonnas, sealhulgas olemasolevates omavalitsustes, mis nüüd Grasbergi osad, muutus okupatsioon Napoleoni sõdade ajal mitu korda.