The Idylls of the Queen is set in the Britain of King Arthur, as portrayed by Sir Thomas Malory's classic Le Morte D'Arthur; as specifically stated by the author, no attempt is made at depicting with historical accuracy the time of the actual King Arthur.
The Idylls of the Queen takes place in the realm of King Arthur, based on Sir Thomas Malory's iconic Le Morte D'Arthur; according to the author, there is no intention to accurately represent the era of the real King Arthur.