https://en.wikipedia.org/wiki/Commentarii

Relation to hypomnema

I'm curious how accurate these may have been and could they have contained falsehoods to support later re-imaginings of history? (cf. Relatio in the article Forging Communities by Jennifer Paxton).

https://en.wikipedia.org/wiki/Hypomnemata

See definition of hypomnema.

May be useful to look at some of these literary works to compare/contrast them against commonplace books and their general use in early writings.

https://en.wikipedia.org/wiki/Hypomnema

Hypomnema (Greek. ὑπόμνημα, plural ὑπομνήματα, hypomnemata), also spelled hupomnema, is a Greek word with several translations into English including a reminder, a note, a public record, a commentary, an anecdotal record, a draft, a copy, and other variations on those terms.

Compare and contrast the idea of this with the concept of the commonplace book. There's also a tie in with the idea of memory, particularly for meditation.

There's also the idea here of keeping a note of something to be fixed or remedied and which needs follow up or reflection.