The word “snarking” already has been used in the year 1866.
Just in case you want to know the source for my avatar.
(My apologies for messing with Blake.)
Holiday may have played with Blake’s painting too.
I don’t know.
Illustrations by Henry Holiday (from The Hunting of the Snark, 1876) and Marcus Gheeraerts the Elder (Allegory of Iconoclasts, aka The Image Breakers, around 1567): In the “mouth” of Gheeraerts’ “head” a praying priest is depicted. The shape of the priest also is visible in the “mouth” of Holiday’s vanishing “Baker”.
There is more — with acknowledgments to Mahendra Singh, to John Tufail and to the Internet.