⓱utilities – Change Your macOS User Account and Home Folder Names

Due to my haste (and failing eyesight) I mistyped my name when setting up my new Mac. It stayed this way for months until I got called-out for misspelling my own surname. 

My embarrassment motivated some research and I discovered this can be fixed (if you know where to look). 

The remedy is buried in the Settings Utility on macOS and OSX [Apple Support link]. Type carefully, my friends.