 ::Obviously there isn't any set Wikipedia policy that covers this situation directly - but it would be sensisble to follow the example set elsewhere, such as in the use of English or Irish language names. Here it suggests using the English name where the Irish name is not well-known amongst English-speakers - but making reference to the Irish name in the individual's own article. Following that example for Kazim-Richards would mean doing as I described above.  Cheers.    