QueenSusanofNarnia
New member
In CHRONOLOGICAL (aka entering Narnia) order
First Friend of Narnia: Polly Plummer, The Magician's Nephew, The Last Battle
Second Friend of Narnia: Digory Kirke, The Magician's Nephew, The Lion, the Witch, and the Wardrobe, the Last Battle
Third Friend of Narnia: Lucy Pevensie, The Magician's Nephew (mentioned), The Lion, the Witch, and the Wardrobe, The Horse and His Boy Prince Caspian, the Voyage of the "Dawn Treader", The Last Battle
*Fourth Friend of Narnia: Peter Pevensie, The Lion, the Witch, and the Wardrobe, The Horse and His Boy (mentioned) Prince Caspian, the Voyage of the "Dawn Treader", the Last Battle
*^Fifth Friend of Narnia: Susan Pevensie, The Lion, the Witch, and the Wardrobe, The Horse and His Boy, Prince Caspian, The Voyage of the "Dawn Treader" (mentioned), the Last Battle (mentioned)
*Sixth Freind of Narnia: Edmund Pevensie, The Lion, the Witch, and the Wardrobe, The Horse and His Boy, Prince Caspian, The Voyage of the "Dawn Treader", The Last Battle
Seventh Freind of Narnia: Eustace Scrubb, The Voyage of the "Dawn Treader", The Silver Chair, The Last Battle
Eighth Friend of Narnia: Jill Pole, The Silver Chair, the Last Battle
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*Peter and Susan entered Narnia for the first time together, but Peter was more...believing (in the creatures, the plot, etc..) than Susan. Edmund, however, came into Narnia second of the Pevensies, but wasn't a true "Friend" until after he was saved, because he was on the Witch's side.
^Susan is not a friend of Narnia (meaning she doesn't believe in it anymore) after Prince Caspian .
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YOURS (and I hope this helped)