There are numerous widely varying names of Germany in different languages, more so than for any other European nation. For example:
Official German-language plaque of a German embassy
The German princes choose their king (illustration in the Sachsenspiegel).
Stamp in occupied Germany, 1946: the neutral expression Deutsche Post instead of Deutsche Reichspost, but still the old currency RM (Reichsmark)
The Belgae were a large confederation of tribes living in northern Gaul, between the English Channel, the west bank of the Rhine, and the northern bank of the river Seine, from at least the third cent
According to Strabo: the Belgian tribes (in orange), including the Armoricani (in purple)
Sequani coin 5th to 1st century BCE