Turiel (also Tûrêl; Aramaic: ; Greek: o) is a fallen Watcher in the Book of Enoch, an old apocryphal literature.
In the Book of Enoch, Turiel is described as a fallen Watcher. Later translations reveal that he is one among the 20 leaders of 200 fallen angels. He was mentioned as early as the eighteenth. According to some, the name derives from tuwr (rock) and El (“God”), which means “rock of God”. The translation from M. A. Knibb’s Ethiopic Book of Enoch says “Rock of God” or “Mountain of God”. Grimoire of Turiel
The Secret Grimoire of Turiel is a grimoire that gives instructions to the magician on how to contact Turiel. It is believed to have been written around 1518 and may have been taken from an older source. Marius Malchus, the original publisher, claimed that the work was discovered by him in 1927 when he bought an English translation from a priest who had lost his Latin original. He then copied it before throwing it away.