Not demonstratedNo reliable evidence establishes it; yet not every scenario can be ruled out.
No reliable element points to a Jewish killer or killers. Thomas's 'proofs' are late, second-hand testimonies, collected to support a conclusion already decided.
Assessment
Evidence for
- +Thomas reports the late testimony of a Christian servant woman and the words of a convert, Theobald of Cambridge.
Evidence against
- −These testimonies are collected years after the events, by a partisan author.
- −The royal authorities of the time prosecuted no one.
- −As early as 1896, M. R. James judges these testimonies invented or manipulated.
Limits of the sources
- !We do not know who killed William: other hypotheses exist, none is proven.
Reasoning
The accusation rests on a single source, biased and late. This is not proof of innocence in the strict sense (we do not know who the killer was), hence 'not demonstrated' rather than 'refuted' for this specific point.
- Confidence
- High
- Last reviewed
- 9 November 2026
Assessment history (1)
9 November 2026Not demonstrated
First published assessment (dossier version 1).
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