We pronounce it something like Nord-eh-os here in Serbia, but it's not Serbian word tho... o sounds more like oo in book
Actually, you could be right with the W.
The spelling of Nordeus to me is a bit like how the Welsh spell and speak, where two L's become like a C sound.
In this case the Nor comes together to make a Ro kind of sound.
The deus comes together to make a Land kind of sound.
Thus its pronounced Ro-Land.