Specifically, in this sentence:
… of the people who suffered early trauma, there were some whom it affected in such a way that they …
(I've mercifully only included part of the sentence)
I can't seem to figure out if it should be who or whom. I understand the whole 'subject/object' concept, but that does not seem to clarify what is correct in this particular sentence. Professor Google seems to not know, either.
All I know is whom sounds terribly incorrect here, even if it is correct.