Onomastic congruence (a feature defined in this article) is characteristic of historiographic biographies from the Early Empire. The Synoptic Gospels display onomastic congruence, as well as conservatism in their treatment of names. The preservation of names, especially those centred around key roles and events, suggests that some names may have been preserved in the oral archives of early Christian communities to footnote living eyewitness sources, paralleling historiographical situations.