Wikimedia
Wikipedia: Byronic Hero
A descriptive site about the term Byronic Hero as used by Lord Byron in "Childe Harold's Pilgrimage". With background information about the origin of this idealized yet flawed hero.
University of Maryland
Romantic Circles Praxis Series: Immortals, Vampires, Ghosts: Byronic Heroes
Essay considers modern-day examples of Byron's heroic ideal found in the popular culture of movies, music, popular novels, and television.
Shmoop University
Shmoop: The Prisoner of Chillon
The poem, The Prisoner of Chillon, was written by Lord Byron in 1816. Read about the meaning, and important quotations from the poem in this comprehensive site.