Okay, let me clarify:
The 41 matches in
ubbt_POSTS all contain a column called
POST_POSTER_NAME with his name in it. I edited one of them with his new name, and it's showing the new name on that post.
The 6 matches in
ubbt_TOPICS has his original name in the
TOPIC_LAST_POSTER_NAME column.
I apparently can edit these all to the new name manually. I suppose I can just do that as there aren't that many.
Thanks for the search idea
