So, you intended "he was seen by the dead" to mean "he was seen
near the dead"???!! Okay, I must say that I feel we've been taken advantage of. Maybe I've misunderstood again, but it seems as though you have deliberately posted an ambiguous sentence, and then, after three people attempted to answer what we all took to be the obvious meaning of the sentence, you answer your own question by revealing that the original sentence had a different meaning -- one that never even occurred to any of the people who took the time to try to help you.
We're not here to answer riddles or "trick questions." Several people lately have been answering their own questions. It is a waste of our time to make sincere efforts to answer a question and then find out that the poster is convinced he knows better. So here's a general request --
If you are convinced you know the answer to you own question, don't ask the question.
If you want to post a "trick question" for its entertainment value, post it in the "Puzzles, Riddles and Word Games" section, not in the grammar section!