Username (in settings) and Home folder have different names, also seem to have an "extra" users folder?

While trying to troubleshoot the sudden disappearance of my Calendar data (stored locally, I don't sync via the cloud or anything), I happened to notice that my Home folder has a different name than my username. Additionally, I seem to have another "Users" folders nestled into the "Users " folder of the top level directory.

What's happening here and what if anything should I do about it? Here's a screenshot, top is the setting pane for Users; followed by the "Home" folder (Go>Home); and last is the path from the HD on through...

About to give up on the Calendar issue in part because I couldn't even accurately describe to you all what if anything changed on my end. Just that one day I went to double check something and it was all gone and replaced by some very old calendars that I had put on the cloud a long time ago for the purposes of pulling down some data.