Catholic Encyclopedia: Giraldus Cambrensis: Biographical article on the medieval ecclesiastic and writer.
Gerald of Wales: A biographical profile of the churchman, and what he says about King Arthur.
The Cambridge History of English and American Literature: Giraldus Cambrensis: The life and writings of this Welsh-Norman cleric.
The Standing Stones: Giraldus Cambrensis: The twelfth-century cleric was one of the first to describe Irish music. Page examines some of his tantalizing remarks, and how they relate to harmony.
Wikipedia: Giraldus Cambrensis: Short biographical article, in English and Welsh, hyperlinked to related topics.