I have found two more good names for this, likely cold, world: Atka ("guardian spirit" in some Inuit language) or Atkonartok (name of a god that lives on land and controls the movement of whales). I think we should really stay away from Latin, Greek, and any hot-sounding names. The world has lands en masse, most of them around the two poles, will be cold(er) and pretty dry, and so, I find an Inuit- or Native American-themed world building project/name for the planet good...
The most fitting Inuit name for a planet at all would of course be Tekkeitsertok (God of the Earth, most powerful God). Or what about Oomailiq (leader of a boat, captain)?
However, I didn't really want to propose Irdlirvirisissong even though it's meaning ("demon cousin of the moon") might well fit to this planet.
The main river in the northern (or southern) continent would of course be called Umiaktorvik (just meaning "river").