Should we create translations of foreign movie titles?

[alehel]

I've started adding some old Norwegian classics to the movies database, but I'm currently stuck debating how to name them. Usually one uses the english name of the movie and then put in brackets to original name. How should we do this for foreign movies that never had an english release and therefore no official english translation? One example is a norwegian movie from the 50's called "Dødens tjern". Translated this could be "Lake of the Dead", but this is not the official translation as it was never released abroad. Should I just add these movies without an english title, or make my own translations? I've already added a couple without the english translation, but I could always edit these entries to include them.

Also, despite these movies not being available abroad, their new dvd releases (not available on blu-ray sadly) include english subtitles, so most of these are english friendly.