I have had trouble all my life because John was a traditional boy name but they didn't want to mix me up with my father. Until high school I was Chris (officially John Christopher). I went for 1 year to a British school where one had to sign everything with first 2 initials (no first name). I kept the practice in Canada, so I became JC. After high school I went back to Chris. Hospitals, doctors, dentists, insurance companies, and anybody who has me on a list of some kind often still have me as John. I have two sets of health charts at several hospitals and some I visited only once, have me as both.
My grave will say "on placebo", and the name will be Chris (I hope).
Don't go by gravestones. My grandmother's has the wrong date.
The dustbin of history is crowded. Probably no room for me.