Friar’s Lanthorn
.Sir W. Scott calls Jack oʹLantern Friar Rush. This is an error, as Rush was a domestic spirit, and not a field esprit follet. He got admittance into monasteries, and played the monks sad pranks, but is never called “Jack.” Sir Walter Scott seems to have considered Friar Rush the same as “Friar with the Rush (light),” and, therefore, Friar with the Lantern or Will oʹ the Wisp.
“Better we had through mire and bush
Been lanthorn-led by Friar Rush.”
⁂ Milton also (in his LʹAllegro) calls Will oʹ the Wisp a friar, probably meaning Friar Rush:
but “Rush” in this name has nothing to do with the verb rush [about] or rush [light]. It is the German Brüder Rausch, called by the Scandinavians Broder Ruus. (Scandinavian, ruus, intoxication, in German rausch, which shows us at once that Friar Rush was the spirit of inebriety. (See Robin Goodfellow.)