What are bagginses?

Some articles on bagginses:

List Of Hobbit Families - B
... It seems likely that the Bagginses were the major landowners and leading family of the area around Hobbiton ... After Bilbo and Frodo left, the only recorded Bagginses are the descendants of Bilbo's great-nephew Posco Baggins, although many other descendants of Balbo ... A family with many connections to the Bagginses and Tooks ...