PANTHEON
ExploreBuild My Library
© 2026 Pantheon — an atlas of the ideas that shaped how we think.
personc. 1100-1155

Geoffrey of Monmouth

Summary

Geoffrey of Monmouth (c. 1095–1155) was a Welsh cleric and author of the Historia Regum Britanniae (History of the Kings of Britain, c. 1136), which invented or elaborated the legend of King Arthur, Merlin, and the Arthurian court, drawing on Welsh tradition and his own invention.

Core Contribution

Created the literary King Arthur; his Historia is the source from which all Arthurian legend flows.

Key Spikes & Highlights

  • King Arthur
  • Arthurian legend
  • medieval history
  • Wales

Notable Works & Achievements

Historia Regum Britanniae

Historical Influences

Welsh tradition Nennius

Intellectual Lineage

Welsh historical tradition

Contemporaries & Peers

Medieval chroniclers

Minds Influenced

Arthurian tradition Chrétien de TroyesMalory

Intellectual Posterity

No conceptual posterity found.

Discussing

Geoffrey of Monmouth

Ask anything about Geoffrey of Monmouth — their ideas, influences, contradictions, legacy.

Sign in to start a conversation.