The actual historical evidence for specific apostolic martyrdoms: strong for Peter, Paul, James son of Zebedee, James brother of Jesus (early, multiple sources). Possible for Thomas (some 2nd century evidence). For the rest (Bartholomew, Matthew, Matthias etc.) — 3rd-5th century accounts that are contradictory and likely fictional. McDowell and Moss agree on the later accounts being unreliable.

Tier 1 (highest confidence): Peter, Paul, James son of Zebedee (Acts 12), James brother of Jesus (Josephus + multiple Christian sources). Tier 2 (probable): Thomas — some 2nd-3rd century evidence. Tier 3 (unreliable): Bartholomew, Matthew, Matthias etc. — contradictory late accounts (e.g., Bartholomew was stabbed, crucified, drowned, burned, AND flayed — one or none is true). McDowell concedes this openly, separating the evidential argument from tradition.