B. Traven

There is an entry for Bruno Traven in IMDB that lists a marriage, and a number of works. The author "B. Traven" is possibly a pen name and his real identity is in dispute. He used a number of different names, including Ret Marut and Hal Croves. Where he was born is also in dispute. See the article at https://en.wikipedia.org/wiki/B._Traven. 

None of this is mentioned in the entry on IMDB, and the name is taken as fact, even though it may be fiction. 

There doesn't seem to be any way to enter this information.

The entry should be updated with more information, including the fact that the name might be a pen name for someone else whose identity is unknown.