How does Tress know??

[ShatteredDiamond She/Her]

In Tress of the Emerald Sea, Tress says: "Don't wake me up unless Death himself shows up, nails in his eyes." When did Marsh become known on Lumar?

[alder24]

5 hours ago, Phendorana said:

In Tress of the Emerald Sea, Tress says: "Don't wake me up unless Death himself shows up, nails in his eyes." When did Marsh become known on Lumar?

Ars Arcanum of TLM did mention that the idea of Marsh as the impersonation of death is spreading throughout Cosmere, asking if this is something supernatural. I personally think this is a combination of those two factors - Worldhoppers do spread the news about Marsh, but due to Scadrian perception of Death as Marsh, other words might subconsciously also perceive death as looking like Marsh (due to the Spiritual Ideal of Death shifting to match that of Scadrians).

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I have, after lengthy questing, obtained an interview with Marsh, the one known as Ironeyes on Scadrial. (As a side note, it is curious how news of his nature is spreading to other worlds. Is this natural rumormongering, or something more supernatural?)

[Quantus he/him]

Presumably worldhoppers spread the knowledge, or at least the myth.  Tress happens much later in the timeline, so the implication is that worldhoppers have spread some of Scadrial's culture to other worlds.  Or possibly that he will eventually travel and do Significant Things on other worlds.  

[Wits instant noodles he/him]

we also see a Kandra as a character in this book so we know they are on the planet!