From A Wiki of Ice and Fire
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This information has thus far been released in a sample chapter for The Winds of Winter, and might therefore not be in finalized form. Keep in mind that the content as described below is still subject to change.
|Book||The Winds of Winter (appears)|
Rugen Saltbeard is an ironborn captain under Euron Greyjoy.
Rugen has a beard.
The Winds of Winter
Rugen feasts in the ruins of a castle near the Arbor with Euron's men, and takes part in mocking Aeron Greyjoy when he is brought up from the hold of the Silence.