Kingdom of Strathclyde
Lailoken (aka Merlyn Sylvester) was a semi-legendary madman and prophet who lived in the Caledonian Forest in the late 6th century. The "Life of Saint Kentigern" mentions "a certain foolish man, who was called "Laleocen"" living at or near the village of "Peartnach" (Partick) within the Kingdom of Strathclyde. Laleocen prophesied the death of King Rhydderch Hael.