Bunce family
From Tolkien Gateway
The Bunce Family was a family of Hobbits. Mimosa Bunce seems to be the only recorded member of the family. Furthermore "old Mrs. Bunce" living in Michel Delving is mentioned in the poem "Perry-the-Winkle" recorded in The Adventures of Tom Bombadil, but she's probably fictious even inside Tolkien's world, just a character in the Hobbit folklore poetry.
