The White Witch
Bombing of London and Refuge
Peter Pevensie lived in London, England until he and his siblings were evacuated to the countryside by train because of the air-raids of World War II. The children stayed at an old mansion belonging to Professor Kirke until the end of the war. The house had extensive grounds that proved to hold lots of fun, but rainy days were dreary. Deciding to explore the house, they all split up and when Lucy came back she claimed to have been gone for hours. Everyone thought she was playing a game, but when she insisted they followed her to a wardrobe kept all by itself in a spare room upstairs. It was a perfectly ordinary wardrobe and Peter encouraged her to forget her joke.
The next day it was still raining and a game of hide and seek was begun. Moments later Edmund and Lucy came to find the others and Lucy once again insisted there was a country inside the wardrobe, and that Edmund had been in it too. Edmund said he had just been teasing her, at which Lucy rushed from the room. Peter told Edmund off for it, and expressed fears that there might be something wrong with his youngest sister. During the night Peter and Susan became so worried about her that they decided to go and speak to the Professor about it.
The Professor did not turn out to be the help that they wanted, but help of a different sort. He helped them to establish that Lucy was and always had been more truthful than Edmund and that she was not mad, you could tell by talking and looking at her. Therefore, she had to be telling the truth. Peter and Susan were stunned at this and Peter pointed out that if things were real, they were there all the time, and that Lucy had no time to go anywhere. The Professor suggested that another world would likely run on its own time, while a young girl would not likely come up with that idea on her own. So, Peter made sure that Edmund left Lucy alone about it, and the subject was not spoken of at all.
The Professor's house was often toured by visitors and the housekeeper Macready led them around and told them about all the things that were in it. The Macready disliked children in the first place, but especially when she was leading visitors through the house. One day the children were caught with her and a group between them and the door, and speedily headed as far back into the house as they could. Macready seemed to be following them, until eventually the only place left to go was into the spare room where the wardrobe was. It was Edmund who urged them all inside the wardrobe to hide, but when the four of them looked up again, it was snowing. When everyone realized at once that this was the world Lucy had found before hand, Peter was the first to apologize for not believing her.
Putting on some of the coats that they found in the wardrobe they set out to explore the forest. Edmund made a comment about which direction they should be going, revealing that he had indeed been in this place before. No one spoke to him and Susan changed the subject by asking where they were going, and Peter decided that Lucy should lead.Lucy led them to Mr. Tumnus's house, a faun whom she had previously met, only to discover that he had been arrested by the White Witch's Secret Police. Lucy explains that he was arrested because of her and Peter agrees that they must do whatever they can to help him.
Just outside Mr Tumnus's house a talking beaver found them and took them to his dam. There, he told them about a prophecy which said that two Sons of Adam and two Daughters of Eve would sit on the Four Thrones on Cair Paravel and bring an end to the Witch and her never ending winter without Christmas. Edmund betrayed his siblings as they were listening to this, leaving the beaver's dam to find the White Witch. Mr. Beaver explained what had happened and that the only person who could help Edmund now was Aslan, the Great Lion who was waiting for them at the Stone Table. Peter just wanted his siblings to be together, so he agreed to go.
On the way to the Stone Table Peter received his sword, Rhindon, and shield from Father Christmas when he visited the four children and the beavers, along with several other talking beasts. This was a sign that the White Witch's power was weakening.
After the siblings arrived at Aslan's Camp, it came under attack by at least two wolves from the Witch's Secret Police, and Aslan encouraged Peter to fend them off. In the process Peter slew the wolf captain Maugrim, for which Aslan knighted him Sir Peter Wolf's-Bane or Fenris-Bane, and he became the only member of the Most Noble Order of the Lion.
Battle of BerunaPeter and his Supreme General Oreius commanded the initial formations of Aslan's Army during the Battle of Beruna during which Peter personally dueled with White Witch herself until Aslan finished her. The battle had been going ill when Aslan returned to his army with Susan and Lucy, as well as every Narnian who had been turned to stone and kept in the castle by the Witch. Soon after, the Narnians won the battle.
High King of Narnia
After the battle Peter was crowned by Aslan as High King Peter, the Magnificent, Lord of Cair Paravel, and Emperor of the Lone Islands, each of his siblings sharing the throne. The ancient prophecy of two Sons of Adam and two Daughters of Eve coming to sit on the four thrones of Narnia at the castle Cair Paravel had come to fruition. This marked the end of the Long Winter and was the beginning of Narnia's Golden Age.One of King Peter's few dilemmas during the Golden Age was the Ettinsmoor War, where he drove away the Giants from the North.
In Narnian-year 1015, the four Pevensies, now adults, hunted an enigmatic White Stag which led them back into the Wardrobe and their own Earth, where they became children once again, disappearing from Narnia. The children told Professor Kirke all about what had happened, and hesitantly asked if he thought they would ever be able to get back to Narnia. He assured them that they would, as long as they didn't try to get there.
Old Narnia in DangerOne Earth-year later, the Pevensies were pulled back into Narnia due to an emergency call. The Telmarine Prince Caspian X, had blown Queen Susan's horn (one of her gifts from Father Christmas) and brought the Pevensies back into his world. Although in Narnian Time it had been over a thousand years since Peter's reign as High King, the Narnians all respected his title (As Aslan said in "The Lion, the Witch and the Wardrobe", "Once a King or Queen of Narnia, always a King or Queen of Narnia."). Peter and Edmund initially met Caspian while saving him from an assassination attempt by his own Black Dwarf ally Nikabrikand the Dwarf's cronies
Battle of Aslan's How
The Pevensie children ultimately helped Caspian defeat his usurping uncle Miraz during the Narnian Revolution and Peter formally gave authority to Caspian to rule Narnia as the succeeding king. Peter later confided to Lucy and Edmund that he and Susan were told by Aslan that they would never again return to Narnia, as they were now too old and had learned everything they could from this world. The four children returned to their world, but never forgot Caspian.