This article contains an exhaustive presentation of all proper nouns in 2 Esdras on codex Sinaiticus that have been corrected, inserted, or removed. The spellings of these proper nouns are used to compare the texts of the correctors with the text types of 2 Esdras. These data contribute to the discussion of whether the corrections labelled ca and cpamph belong to distinct individuals or the same person, and the relationship of cpamph to the Hexapla and Antiochene/Lucianic recension.