Skyrim:Incriminating Letter (Jarl)
The first paragraph is nearly identical to another note of the same name, penned by Maven Black-Briar, which is found in the game. The signature "D.M." on this note likely stands for Delvin Mallory of the Thieves Guild, with whom Maven is closely associated.
<Alias=Jarl> has shown great wisdom in choosing you as <Alias.PronounPos=Jarl> Steward. A position well befitting your character, as it demands great cunning, grace, and, shall we say, a decided talent for performing one's duties tactfully and with much discretion.
The Jarl wasn't acting in <Alias.PronounPos=Jarl> best interest by turning down my gracious offer. But you were able to see past <Alias.PronounPos=Jarl> short-sightedness. In the end, I'm quite sure the Jarl will thank you for your cleverness in this matter.
I am in your debt. Commensurate with your continued cooperation, I grant you a boon.
It is only a matter of time before our efforts bear fruit.
--D.M.