Duchy of Jülich
For centuries Tegelen was part of the Duchy of Jülich, while neighbouring Venlo belonged to the Duchy of Guelders. So literally, according to the people of Tegelen Venlo was "abroad" and vice versa. This explains the differences between the local dialects of the neighbouring towns and the rivalry between these parts of the city that persists to this day. The black, uncrowned lion on a golden ground, in the coat of arms and the flag of Tegelen can be found in the coat of arms of the Duchy of Jülich.