Just a guess at Mithrandir for the M clue, because the elves sang 'Mithrandir! O Pilgrim Grey!' in a lament for him.
Of course he's in the films, but is the name Mithrandir ever used?
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"Sit by the firelight's glow; tell us an old tale we know. Tell of adventures strange and rare; never to change, ever to share! Stories we tell will cast their spell, now and for always."
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