Standard references date the Augustan Age's end precisely, to Alexander Pope's and Jonathan Swift's deaths in 1744 and 1745, but describe its starting boundary only as falling within the reigns of Anne, George I and George II, and the source's own text calls the period's boundary points generally vague.
What would resolve this A literary-historical source anchoring the Augustan Age to a specific inaugurating work, event or year rather than a reign-level range.
OpenLiterary history and periodization scholarshipAugustan Literature (Wikipedia)