Good spot indeed! We might even have the identity of the Dragonborn in Julikar Caeziryn, though for the ploy to work he's probably going around under a new identity, maybe even the one of the dead Dragonborn. .
Going to the Harbourmaster might give us the assumed identity.
Of course we know that Grom is involved as well. And, Crane if Crane is a real person.
