The Historical Illuminatus Chronicles is a series of three novels by Robert Anton Wilson written after his highly successful The Illuminatus! Trilogy and his 1981 Masks of the Illuminati. His co-author from the first trilogy, Robert Shea, was not involved in this series, providing only a praising blurb.

It is composed of three books: The Earth Will Shake (1982), The Widow's Son (1985) and Nature's God (1991). A fourth book, The World Turned Upside Down, was promised at the end of Nature's God but was never written; Wilson also had stated he intended the Chronicles to be a pentalogy.[1] His death in 2007 left the series as a trilogy, incomplete. There is an audiobook of the first novel read by Scott Crisp.[2]

They are the most secret of organizations and the most powerful — the Illuminati. They continue to shift the patterns of history to fulfill plans of their own, to open pathways to power which ordinary mortals are never meant to tread. It is 1776, and Sigismundo Celine, a young Neapolitan aristocrat and musician — exiled from his homeland after an unfortunate duel — has fled Europe for the American colonies. Here he will seek to master the next levels of metaphysical magic in the wilderness of the Indian territories. In the meantime, the Irish fisherman, Moon, is caught up in revolution, his fate linked with George Washington and Lafayette. While Sigismundo prepares to contest the most powerful of the Indian medicine men, Moon, Washington, and the troops are waging an equally desperate battle for survival. THESE ARE THE EVENTS WHICH WILL SOON RESHAPE THE WORLD. "The funniest, most incisive social critic around." - Riane Eisler, author of The Chalice and the Blade "A dazzling barker hawking tickets to the most thrilling tilt-a-whirls and daring loop-o-planes on the midway of higher consciousness." - Tom Robbins, author of Even Cowgirls Get the Blues, Jitterbug Perfume and other great books “I have learned more from Robert Anton Wilson than I have from any other source.” - Comedian George Carlin