"imaginary average American citizen," 1934; the Q perhaps suggested by John Quincy Adams.
John
john
John Bull
John Doe
John Hancock
John Q. Public
Johnnie
Johnny
johnny-cake
johnson
joie de vivre
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}