Ramandu's daughter

In C. S. Lewis's Narnia she is introduced in The Voyage of the Dawn Treader as the daughter of Ramandu, the 'star at rest.' Lewis presents her as a celestial-linked, immortal figure whose identity is defined by lineage to a heavenly star rather than by a personal name in the novels. The narrative role given in the Voyage is that of an otherworldly resident of Ramandu's Island who aids the voyagers; three years after their first meeting Caspian returns to marry her and she becomes Queen of Narnia. The books provide no birth myth or personal name; the appellation 'Lilliandil' appears only in the 2010 film adaptation and is an invention of that production.

Lewis describes her as a young and beautiful immortal woman with long blonde hair, first seen wearing a blue gown and holding a lit candle. She is later remembered in The Silver Chair as 'a gracious and wise lady in whose veins flowed the blood of stars,' evoking a luminous, noble aspect. The 2010 film adaptation visualizes her emerging when a falling star transforms into a luminous feminine figure, an adaptation choice that emphasizes a star-to-woman metamorphosis not described in Lewis's text.

Within the novels she functions as a knowledgeable, benevolent guide: on Ramandu's Island she explains the nature of a sleeping enchantment upon three of the Seven Great Lords of Narnia, sets conditions about how that enchantment is to be ended, and aids Caspian and the crew in their quest. Her parentage and descriptions tie her metaphysically to the stars and mark her as immortal. The text shows her participating in court life after marriage and does not ascribe to her explicit hostile powers; the film adaptation depicts her returning to the heavens after guiding the company.