The thesis focuses on the portrayal and theme of knighthood in the series of novels A Song of Ice and Fire by the American author George R.R. Martin. Beginning with the author's biography and bibliography, then describing the literary and the historical context of the novels and why Martin's novels are examples of medievalism. Knighthood was an important facet of European medieval society and a key element of medievalist works, such as Malory's Le Morte d'Arthur and Scott's Ivanhoe. Martin was influenced by the historical tradition of knighthood, but he added some of his innovations, which I described in the next section. I analysed some knight and non-knight characters from the novels according to five virtues of knighthood from Chivalry in Westeros and according to Martin's syntagma 'true knight'.