Prophecy of Merlin

Prophecy of Merlin (Prophetia Merlini), sometimes called The Prophecy of Ambrosius Merlin concerning the Seven Kings, is a 12th-century poem written in Latin hexameters by John of Cornwall, which he claimed was based or revived from a lost manuscript in the Cornish language. The original manuscript is unique and currently held in a codex at the Vatican Library.