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Martinus Polonus

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The Footnote June 27, 2026 · San Clemente, Rome

The Female Pope Who Reigned for Two Years and Five Months in the Ninth Century and Almost Certainly Did Not Exist

According to a 13th-century Dominican chronicle, an English-born woman called Joan reigned as Pope John VIII from about 855 to 858 CE, gave birth during a Lateran procession, and was killed by the crowd. No 9th- or 10th-century source mentions her. The story is almost certainly a 13th-century fabrication. It was treated as historical fact for 400 years.

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