The Getty Thesaurus of Geographic Names lists towns called Meadowland, Meadowlands, and Meadow Lands in various states, but no counties with any of those names.

By entering "ghost of * county" (in quotation marks) into Google, I came up with several ghost stories, but no songs, and nothing that sounded even remotely like "Meadowland County". I couldn't locate Big River Bend, either. So I'm stumped.