The Druids of Stonehenge
One of the many, many rock bands that traveled to the Bavarian city of Ingolstadt to participate in the big Walpurgisnacht rock festival in the 1975 novel Leviathan, the third book in Robert Anton Wilson’s insane Illuminatus! trilogy. They only get mentioned in a giant list.
On April 28, while Dillinger loaded his gun and the kachinas of Orabi began the drum-beating, the Acapulco Gold-Diggers arrived, followed by the Epic of Gilgamesh, the Second Law of Thermodynamics, Dracula and His Brides, the Iron Curtain, the Noisy Minority, the International Debt, Three Contributions to the Theory of Sex, the Cloud of Unknowing, the Birth of a Nation, the Zombies, Attila and His Huns, Nihilism, the Catatonics, the Thorndale Jag Offs, the Haymarket Bomb, the Head of a Dead Cat, the Shadow Out of Time, the Sirens of Titan, the Player Piano, the Streets of Laredo, the Space Odyssey, the Blue Moonies, the Crabs, the Dose, the Grassy Knoll, the Latent Image, the Wheel of Karma, the Communion of Saints, the City of God, General Indefinite Wobble, the Left-Handed Monkey Wrench, the Thorn in the Flesh, the Rising Podge, SHAZAM, the Miniature Sled, the 23rd Appendix, the Other Cheek, the Occidental Ox, Ms. and the Chairperson, Cohen Cohen Cohen and Kahn, and the Joint Phenomenon.
There was a real, minor band with the name in the late 1960s, but the term is common and generic enough that Wilson was likely not referring to the existing band.