Forum:Artifacts or Artefacts of Rassilon?

We have an Artefacts of Rassilon article, and a Category:Artefacts of Rassilon. But we have Rassilon. We've also got other pages spelled both ways, and both spellings appear in the bodies of various other pages.

The OED gives "artifact" as the main entry, and "artefact" as a variant spelling. (This is one of the few examples where the UK and Canada agree with the US, but disagree with other Commonwealth countries.)

But, before I go changing a couple dozen pages to make this consistent (and add a link to the artifacts article from the Rassilon article, and so on): Is either spelling used in the novels, novelizations, etc.? We probably want to be consistent with what's used in-universe, even if it disagrees with the OED. --Falcotron 22:31, May 30, 2010 (UTC)