Raimey,

Swedish name of "German hearth/furnace is Tysksmedje, literally, Germain Smithy. "Osmund" is generally referred to in Swedish sources as probably a Nederlandsk jargon word. Making of "osmund" was widely displaced by Tysksmedje, especially for commercial, export production, in 1400s.

I almost never read stuff in British English. Stick to American English, but mostly to books in Swedish and somewhat less in Russian. I neither read, speak or understand German.

Niklas