Medieval Europe Codexery — Data & Quality

We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.

Last full accuracy audit: 2026-08-29 · 10 entries checked · 3 flagged · 5 issues confirmed · 3 corrected · 2 still open

Recent findings (audit lane, verbatim)

Lombard League — The League did not remain active after Frederick II's death in 1250; it effectively dissolved by the early 1250s.

Lombards — The entry states that the Lombards conquered most of the Italian Peninsula between 568 and 774 AD, but they never controlled the entire peninsula; Byzantine-held areas like Ravenna, Rome, and the south were not fully conquered until later, and the Lombard king

Lombards — The entry claims the Lombards 'defeated the Heruls and Gepids' in the Danube region, conflating separate events: the defeat of the Heruls occurred earlier (c. 508–510 AD) under King Tato, not in the same period as the Gepid conflict under Alboin in 567.

Republic of Siena — The claim that by 1179 the republic had a written constitution is anachronistic; the earliest known written statutes for Siena date from the 13th century, not 1179.

Republic of Siena — The statement that the republic surrendered on 21 April 1555 after about 15–16 months of resistance is incorrect; the siege lasted about 13-14 months.

Open data

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Corrections

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