Argent

The promontory that all that Corwin’s Pattern effects.

Pearl

Pearl is the kingdom that Corwin founded on the promontory where he drew his Pattern, drawn during Pattern Fall as a backup to the main Pattern.

Corwin went out of his way to bar other powers from his promontory; the Time Lord Melkizedek had to roll back one situation that involved a Logrus blade, Ilk, Jean, and Osric that (briefly) resulted in Pearl being destroyed.

During the aftereffects of Ingold’s undrawing of his Super Pattern, The whole promontory was moved (pushed?) outward into the Sea of Chance. Since Corwin was careful to keep Jean out of Pearl, there has been little contact with those on this promontory since then. This is one of the promotories in the Great Atol Project.

The current ruler of Pearl is presumed to be (formerly) Sandy Corwin until Deirdre comes back to rule jointly with him, after stepping down from being King.