Tolkien Translations

[Earendilyon]

Guinevere, probably Tolkien changed his mind on this matter, or chose to live with the fact that translators would want to translate the names. After the Dutch translation had been published, and also the Swedish, he wrote the Guide I mentionned earlier.
Letter 204 talks about the Swedish translator's handling of the names. JRRT then says:

I see now that the lack of an 'index of names' is a serious handicap in dealing with these matters. If I had an index of names (even one with only reference to Vol. and chapter, not page) it would be a comparatively easy matter to indicate at once all names suitable for translation (as being themselves according to the fiction 'translated' into English), and to add a few notes on points where (I know now) translators are likely to trip. .... (my bolding, Ear)