From which place, time, or point forth; forth from which; onward from which.(adverb)
Forth from what place, time, or point; onward from what place, time, or point.(adverb)
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Use "whenceforth" in a sentence
"Though they are still those that would contest this fact; peevish disgruntlement from pedants querulously arguing for currently used pitches, whenceforth fossilised football remains were found"
"I'll just try Googling the relevant commandment: "Thou shalt helpeth others in their hour of need-except whenceforth a forbidden gayness eminates.""