Ithlinne Aegli aep Aevenien was a legendary elven healer, astrologist and oracle. She had a gift for divination and prophecies, the best known of which is Aen Ithlinnespeath. Ithlinne's Prophecy has been observed to have correctly predicted a number of things, such as the Northern wars (1239 – 1268) and the plagues of 1268, 1272 and 1294.
Ithlina, actually Ithlinne Aegli: daughter of Aevenien, the legendary elven healer, astrologist and soothsayer, famous for her predictions and prophesies, of which Aen Ithlinnespeath, Ithlina'a Prophesy, is the best known. It has been written down many times and published in numerous forms. The prophesy enjoyed great popularity at certain moments, and the commentaries, clues and clarifications appended to it adapted the text to contemporary events, which strengthened convictions about its great clairvoyance. In particular, it is believed I. predicted the Northern Wars (1239–1268), the Great Plagues (1268, 1272 and 1294), the bloody War of the Two Unicorns (1309–1318) and the Haak Invasion (1350). I. was also supposed to have prophesied the climactic changes observed from the end of the thirteenth century, known as the Great Frost, which superstition always claimed was a sign of the end of the word and linked to the prophesied coming of the Destroyer (q.v.). This passage from I.'s Prophecy gave rise to the infamous witch hunts (1272–76) and contributed to the deaths of many women and unfortunate girls mistaken for the incarnation of the Destroyer. Today, I. is regarded by many scholars as a legendary figure and her 'prophesies' as very recently fabricated apocrypha, and a running literary fraud.
Effenberg and Talbot, Encyclopaedia Maxima Mundi, Volume X