@evan I thought I remembered a thinker who was known only for having been attacked by Schelling, being said have been preserved in Schelling's critique like a fly in amber, but I cannot find this! Nor would it be a word if we could find it.
I've wondered about this with Benno Kerry; I'd like to see what Frege was responding to, but AFAIK Kerry's articles haven't been translated and maybe not reprinted.