I found one Jaxon who was christened in 1669 in England (see
https://familysearch.org/search/record/results?count=75&query=%2Bgivenname%3AJaxon&birth_year0=1600) which is the earliest I can find, however I am uncertain if that person was actually called Jaxon in his life.
I also found the earliest Jaxon born in America (see
https://familysearch.org/search/record/results?count=75&query=%2Bgivenname%3AJaxon&birth_year0=1700) - he was born in 1789.
You can also look at
https://familysearch.org/search/record/results?count=75&query=%2Bgivenname%3AJaxon&birth_year0=1800, where there are over 100 Jaxons being born in the 1800s.
Hope that helps. :)
My PNL:
http://www.behindthename.com/pnl/149249This message was edited 6/28/2015, 2:41 PM