Up until I was 13 back in 1960, I used to skip school to go out on my motor bikes over the local fields... and there were lots of fields back then. I always skipped english classes, never maths or geometery or phisics, so up until I started to teach myself to read, I used to spell my name Petter. Beat that.
Mind you I only tought myself to read not spell, but once I started to read on pc, being used to seeing words in type print I soon saw how bad my spelling is/was. Cheers, Petter out