River Folk

The River Folk was a name for a community of Hobbits who lived in the Wilderland - the Hobbits' original home - even after most of their kin left west (eventually reaching Bree and The Shire) to flee the threat of Angmar.
Déagol and Sméagol were members of this community, which was led by Smeagol's grandmother. They disappeared over the years, with Smeagol - now Gollum, sustained but corrupted by the power of the One Ring - their only remnant until his death in TA 3002.