guerdon (n.)

"reward, recompense" (now only poetic), late 14c., from Old French guerdon, guerredon "reward, recompense, payment," from Medieval Latin widerdonum, from Old High German widarlon "recompense," from widar "against," from Proto-Germanic *withro- (see with) + lon "reward," from Proto-Germanic *launam, from PIE *lau- "gain, profit" (see lucre). Compare Old English wiðerlean "requital, compensation." Form influenced in Medieval Latin by Latin donum "gift." Compare Spanish galardon, Italian guiderone.