Yes, but why would I assume that jOhn is typical of the locals?

You can't tell me that it is not deliberate when he writes his name "jOhn" instead of "John". He always does it the same way. That suggests to me not dyslexia but a form of humourous intent on jOhn's part. Seems to me that a dyslexic would sometimes get it right and sometimes get it wrong...not ALWAYS get it wrong in exactly the same way.

I suspect you are pulling my leg.