Oakenshield is one of the four Shield Islands north of the mouth of the Mander. The Shield Islands provide a large portion of the war ships for the Tyrell fleet. The only member of the house to appear is Ser Glendon Hewett, a member of the Night’s Watch stationed at Eastwatch-by-the-Sea.
Ser Glendon Hewett arrived in Castle Black in the company of Ser Alliser Thorne and Janos Slynt, and is one of their supporters.