"of this, concerning this," late Old English; see here + of (prep.). Compare Danish hereaf, Swedish häraf.
the twigs hereof are physic
hereditary
hereditism
heredity
Herefordshire
herein
hereof
hereon
heresiarch
heresy
heretic
heretical
)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}