Bungo Baggins (T.A. 2846 - 2926, died aged 80) was the eldest child of Mungo Baggins and Laura Grubb.
Bungo, a well-to-do Hobbit, married into the Took clan when he wed Belladonna Took, daughter of the Old Took, in 1280. Bungo and Belladonna had only one child together, the infamous Bilbo Baggins.
Apart from fathering Bilbo, Bungo's other achievement is that he built and excavated the rather luxurious Bag End in the Hill in Hobbiton.
There is an indirect mention of Bungo in The Fellowship of the Ring as the person who laid down some Old Winyards who were given to Old Rory Brandybuck.