Note 365 — Chapter XVIII · THE TRE FONTANE AND S. PAOLO.
Reading edition
The accounts of the apostle's death vary greatly: "St. Prudentius says that both St. Peter and St. Paul suffered together in the same field, near a swampy ground, on the banks of the Tiber. Some say St. Peter suffered on the same day of the month, but a year before St. Paul. But Eusebius, St. Epiphanius, and most others, affirm that they suffered the same year, and on the 29th of June."—Alban Butler.