What does this word mean? Is it a German word?

well, the last part is East Kingdom or Territory which is usually Austria...Walter??

Vorderösterreich (also referred to as "Vorlande"; Austrian Forelands), name for the Habsburg domains in the west of their empire: in Switzerland (Aargau, Thurgau, Zürichgau, etc.), in Swabia, and in Alsace (Sundgau). In 1368 the city of Freiburg im Breisgau submitted to the Habsburgs and became the political and intellectual centre of Vorderösterrreich.
More here

wunderbar...a learning Sunday morning