COMMENTARY
Halley's Comet's last visit was 1986. Next visit is 2061.
Its first confirmed recorded sighting was by the Chinese in ~239 BC; there's an unconfirmed Greek sighting in ~467BC.
I will also note that it was first recorded British sighting was in 1066.
Thats a significant date for the Fae in the Dresden Files, because 1066 was also the year that the Battle of Hastings happened in recorded history, and that was around when Mab and Titania came to power, I think.
Other things that happened in 1986 Dresdenverse:
Michael killed Siriothrax around 1986 according to the timeline.
Epidii were an Iron-Age Celtic tribe of northern Britain, specifically the island of Islay in the Inner Hebrides.
Currently part of Argyll in western Scotland, but only about 40km from the Irish coast.
They were mentioned by the Roman historian Ptolemy.
According to Wikipedia, Islay had Gaelic, Irish, Norse and Scottish influences.
Broken ramparts of the Empire of Wolves.
The Empire of Wolves is obviously Rome, and given the previous mention of northern Britain, the broken ramparts in question is probably referring to Hadrian's Wall, since Rome itself fell centuries earlier.
Children of the moon.
Could be a reference to werewolves or just general shapeshifters, both of which exist in DF and WoD.
Could be a reference to Lunars.
The empty chair seems to be a reference to the Silver Chair from Exalted 2E.
Or it could be a reference to the empty chair of the August Personage in Jade that the Yama Kings are supposed to be fighting over in the ExWoD/Kindred of the East metaplot.
Iceland.The song, the lament, goes on to describe what you now recognize as a piece of... comet, a piece of cosmic ice and dust falling into the stormy waters of the sea off the coast of an 'island of flames by heaving ice bound'. Alas the text does not get much more coherent from then on:
Volcanic island with ice.
This rather seems like a good thing from the PoV of most mortals.The earth groaned and cracked, it quickened as life in its mother's womb and yet the dream was stillborn, smothered in its crib by the one that should have nurtured it, warded off by false counsel. So does the father devour the sun and so is the passing of ages made delayed. Look ye deathless Gentry upon broken ramparts of the Empire of Wolves, like rotted teeth in gums of green and wonder what might have bee born of its death if folly was not called wisdom if the hungering wyrm had not been called blind and grasping
Father devour the sun is a clear reference to GrecoRoman mythology and Cronus/Saturn.
South and east from off coast of Iceland to the shores of a more guarded sea....and so Prince Trucc battled the Wyrm of the sea for the whole of the moon-that-is-no-moon, yet he was overcome when he felt the one for which the treasure was meant fall to the whispers of ambition, hope-to-rule, and be undone. So the Prince took on the guise of a butterfly lost among the spray of white and he flew south and east to the shores of a more guarded sea where dragons do not swim and there I found him true as I now stand before you.
Sayeth he with ringing voice from the belly of the beast: "When your blood of fire is cooled and your bones dead stone that which you have hidden shall be torn from you. A Fickle Prince and a Good Steward, beware, beware the children of the moon."
Sanya's encounter was at Vayda-Guba, which is on the shore of the Barents Sea, which is about as northerly and open as you can get. More notherly than Iceland.
Which might suggest that whats there might be a decoy.