Mundo Sackville-Baggins is normally a resident of Little Delving in the Shire, although before the Assault on Archet he found himself a central character in those events when the brigands confused him with some other hobbit, captured him, and took him to Archet Dale in Bree-land
Mundo Sackville-Baggins (Archet)
Mundo Sackville-Baggins is first encountered complaining during the events leading up to the Assault on Archet, in Archet [25.1S, 48.8W] and other places in both Bree-land and The Shire, along with his friend Celandine Brandybuck.
Mundo Sackville-Baggins (Little Delving)
Mundo Sackville-Baggins survived the assault, and was returned safely to Little Delving in The Shire. [31.8S, 76.8W]
In typical Sackville-Baggins fashion, he is upset and complaining about his unpleasant experience in Archet, and is demanding compensation from Mayor Will Whitfoot in Michel Delving. Indeed, during that episode he was only served some boar shanks, barely lasting for a third breakfast.