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Edward Grim was a clerk from Cambridge who was visiting Canterbury Cathedral on Tuesday 29 December 1170 when Thomas Becket was murdered. He subsequently researched and published a book, Vita S. Thomae (Life of Thomas Becket), published in about 1180, which is today known chiefly for a short section in which he gives an eyewitness account of the events in the Cathedral. He himself attempted to protect Becket, and sustained a serious arm wound in the attack.
- Stephen, Leslie; Lee, Sidney, eds. (1890). "Grim, Edward". Dictionary of National Biography 23. London: Smith, Elder & Co.
- The relevant section from Life of Thomas Becket