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The crux of the bouleversement is parnassian

Matters of actual concern in all the confusion are best explained by a certain school of French poets

And I don't understand French.

People have been looking for you.
You really should post your itinerary, so we won't worry.

I still sense foul play. Is this the real cicerone or is it a cicerone imposter?

At first, we suspected an impostor.

Easy one: knar

PRONUNCIATION:
(nahr)

MEANING:
noun: A knot on a tree or in wood.

ETYMOLOGY:
From Middle English knarre. Earliest documented use: 1250

propine

PRONUNCIATION:
(pro-PEEN, PYN)

MEANING:
verb tr.: To gift, tip, or pledge.
noun: A gift or tip

By pro peein' we might infer an expert who has decided to pee on a group of his otherwise best friends