The Lyke-Wake Dirge, with its dark, mysterious imagery and its brooding melody, is known to singers of traditional songs through its resurrection in the repertoire of folk trio The Young Tradition in the 1960s, and its subsequent recording by The Pentangle and others. What many of its performers may not realise is that its history can be reliably traced to Elizabethan Yorkshire, with a hint from Geoffrey Chaucer that its origins may be earlier. This article uses direct testimony from the 16th and 17th century to explore its meaning, its perilous and punishing “Whinny-moor”, “Brig o’ Dread”, and “Purgatory fire”; and discovers the surprising origin of its doleful dorian melody.