A Storm of Swords
"First of His Name" was written by executive producers David Benioff and D. B. Weiss, based upon the source material, Martin's "A Storm of Swords". Chapters adapted from "A Storm of Swords" to the episode were chapters 68 and 71 (Sansa VI and Daenerys VI). It also covers part of the fourth novel, "A Feast of Crows": namely chapter 14 (Brienne III).