Wels(c)h: Yes, it's Saxon for "foreigner", which the Saxons invading England used for the local Celts, while the Saxons staying at home thought it was just the term for all those Romans and Roman-descendants next door.

...One king to rule them all, one king to find them, one king to bring them all, and in the--Enlightenment?--bind them.

In the land of Prussia, where the soldiers are.