As Arthur, Redcrosse, and Una rest after their victory at Orgoglio's castle, the lady asks Arthur to tell them about his name and lineage. This is a sore spot for Arthur; he says that he does not know who his parents were. He grew up in Wales (in Great Britain) and was tutored by the magician Merlin. Una then asks what brought him to Faerie Land, and this is an even more painful memory. It was the love of a maid, who had briefly appeared to him and called herself the Queen of Fairies, which led him to search for her in Faerie Land for the past nine months. Redcrosse and Una give their sympathy, but now they must continue on their quest; after exchanging gifts, they leave Arthur. They continue toward Una's home, but she is worried that Redcrosse is now too weak from his imprisonment to defeat the dragon keeping her parents captive.
Suddenly, they see a knight running toward them in fright; his name is Sir Trevisan, and he claims to be fleeing a terrible man named Despair. This Despair had already caused one of Trevisan's friends, Terwin, to kill himself. Redcrosse is eager to challenge Despair, and Trevisan reluctantly leads them back to the cave where Despair, a gloomy old man, sits. There they see Terwin's body, and Redcrosse eagerly desires to exact revenge upon Despair. But the old man remains calm and wearily asks Redcrosse what problem he has with death. Death, he says, simply brings an end to a life of sin and, thus, cannot come too soon. He even knows of Redcrosse's sins and weaknesses and almost persuades the knight to take his own life. However, Una steps in and stops him and pulls him out of the cave of Despair.
Seeing her knight's weakness, Una now knows for certain that he needs help, and so, she leads him to the House of Holiness. There, Caelia reigns with her three daughters, Fidelia, Sperenza, and Charissa, and many other virtuous people live with them. Caelia greets Una and, hearing of Redcrosse's condition, commands her daughters to aid his recovery. First, Fidelia instructs him in discipline and the gospel; then, Sperenza comforts him, so that his sins do not again lead to despair. Next, hard Patience and bitter Penance make him suffer for the crimes he has committed, to purge himself. Finally, Charissa comes to Redcrosse, and "Gan him instruct, in every good behest [behavior] / Of love, and righteousnesse, and well to donne (I.x.33)."
After instructing him, she takes him to a hospital where seven charitable men tend to his physical ailments. Now fully recovered in body and spirit, Redcrosse receives one more grace--he is taken up to a high hill by Contemplation, a wise old hermit. There, he can see the new Jerusalem (God's city) and Cleopolis (the city of the Faerie Queene). Contemplation tells Redcrosse his history and future: He is not a faerie but born from a mortal king--he was stolen by a faerie and brought to Faerie Land. He is destined to become a great saint of England, and his true name is George. Much amazed by this news, Redcrosse returns down the hill to the House of Holiness. There, Una is eager to make for her castle, and so they soon depart.
Spenser glorifies Queen Elizabeth by connecting her with the line of King Arthur in Canto ix. Arthur claims to have been born in western Wales, which connects him with the house of Tudor, Elizabeth's family. The history is vague enough that it cannot be disproved; there is just enough information that a connection can be guessed at. And so, in Spenser's mind, Elizabeth has the same secular power and religious authority that Arthur held. Of course, Arthur remains partly a Christ figure, as well. In the exchange of gifts, he gives Redcrosse a "few drops of liquor pure, / Of wondrous worth and vertue excellent, / That any wound could heal incontinent (I.ix.19)." This liquid probably represents the Eucharist, which for Protestants is the symbol of Christ giving his body and blood to the Apostles at the Last Supper. Redcrosse, for his part, gives Arthur "his Saveours testament" (I.ix.19)--that is, the New Testament, which tells of Christ's life on Earth. This foreshadows Redcrosse's eventual role as a Christ figure and, in fact, a more important one than Arthur.
First, though, he must deal with despair. We saw earlier that the lion could not conquer despair in the form of Sansjoy; here in its purest form, it almost defeats Redcrosse, except that he has the truth, Una, and the truth of God's mercy is greater than despair. This is one of the lessons that Redcrosse learns in the House of Holiness, which is an exact counterpart to the House of Pride from Canto iv.