Directory

1170 CE

A year indelibly marked by the murder of Thomas Becket, Archbishop of Canterbury, in his own cathedral by four knights of King Henry II, an act that shocked Christendom and transformed Becket into one of the most venerated saints of the medieval world.

Geopolitics & Diplomacy

  • The conflict between Henry II of England and Thomas Becket over the rights and privileges of the Church versus the crown had escalated over several years, with Becket spending six years in exile in France before returning to England in December.
  • Henry II's frustration with Becket was expressed in words that his knights interpreted as an order to act, leading to one of the most consequential political murders of the Middle Ages.
  • Strongbow, the Anglo-Norman lord Richard de Clare, arrived in Ireland and captured Waterford and Dublin, beginning the Norman intervention in Ireland that Henry II would later assert royal authority over.

Conflict & Security

  • Thomas Becket, Archbishop of Canterbury, was murdered on December 29 in Canterbury Cathedral by four knights loyal to Henry II, who struck him down before the altar.
  • The murder of Becket provoked outrage across Europe and placed Henry II under intense pressure from the papacy and European public opinion.

Climate & Environment

  • Atmospheric carbon dioxide concentration was approximately 275 parts per million, as later confirmed by ice core analysis.

Culture & Society

  • Becket was rapidly venerated as a martyr after his death, and Canterbury Cathedral became one of the most important pilgrimage destinations in Europe.
  • The University of Paris continued to grow as a leading center of theological and philosophical learning in western Europe.
  • The estimated world population was approximately 350 million.