Well despite apostrophes (they might have been manageable), I found out that the Map system doesn't support names with spaces.
You can add a POI with spaces, but you cannot delete it via slash command. I tried using quotes to no avail. I even managed to add a category name with a space using quotes, but still wasn't able to delete it.
One problem solved, blocked by another!
This would have been so much easier if I could just access item IDs from the Examine window, Lol.