I've noticed a lot of people puzzling over Diemen's name and dissecting its literal meanings, which turn out to mean nothing relevant (like, "a pile of straw" isn't useful here). I'm certain it's a reference to Van Diemen's Land, the old name for Tasmania. Diemen lives by stealing, and criminals were transported to Australia, see? If it is, it's pronouced "dee-men".

Huh, maybe? It’d tie to him living around stealing Hotdogs but I’m not sure about the connection.