The theme of disguise in "Tristan and Iseult" by Rosemary Sutcliff.

Disguises and impersonations appear often in Tristan and Iseult by Rosemary Sutcliff. They add to the story and are important in many of the themes throughout the book.
Tristan has just been wounded, and as a last resort gets in a raft with no steering devices and sets him self to sea. He drifts toward some land, and hears some Irish men speaking, who have been told by the King to kill all men from Cornwall. Tristan has to disguise himself, but since he had little energy to move. Tristan, thinking quick, decides that he will just play his harp, and then the Irish won't suspect him of b…