Eng (HAY-gen); Germ (HAH-gen)
The name could be of three possible etymologies, it could be a borrowing from the Danish form of Håkon. Other sources have suggested that it comes directly from the Old High German meaning, “grove; enclosure.” In the case of the German city, this is the most likely etymology. Another possibility is that it is the German form of the Old Norse Högni (protection).
In the Medieval German epic, The Song of the Nibelungs, it is the name of Hagen of Tronje, the slayer of Siegfried and the thief of Nibelungs’ treasure. According to legend, he is half elf and has one eye. He appears in several other German folktales in which he is sometimes portrayed as the hero or the antagonist.
Currently, Hagen is the 430th most popular male name in Germany, (2011).
Another form of the name is Hagano.