Board Thread:General Discussion/@comment-6192846-20151223075113/@comment-23.122.217.39-20151227035026

I would say both, but if not, the kanji. The kanji is used for name meaning, whereas the purpose of the katakana is to clarify on how a name is pronounced. As we aren't anglicizing these names, and so they're written phonetically anyway, the katakana would be superfluous. The kanji on the other hand conveys information that can't be arrived at just by reading the name in English.