system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] Smeagol and Deagol were Stoor hobbits that lived on the banks of the Anduin river. What happened to these stoor hobbits that lived outside of the shire?

The shire was officially colonized in T.A. 1601

But the events with Smeagol's birthday happened in T.A. 2463, which presumably meant that some of the Stoor hobbits still dwelt in the Gladden Fields, and this was after many stoors already settled the Shire. What ever happened to these Stoor hobbits that Smeagol came from?
gpt
The migration began a long time ago, but plenty of eastern Hobbits stayed behind. But they and the other hobbits migrated westwards to join the Shire in response to what eventually turned out to be the return of Sauron's empire.