Original "A Long Expected Party"

In the original version of "A Long Expected Party," Bilbo announces he is leaving and getting married. Tolkien messed around with the idea, and came up with him getting married and having a son, Bingo, and it's his party not Bilbo's. He then makes Bingo Bilbo's nephew that he adopted. It is still Bingo's party. Evidently he stuck to this idea, but liked the name Frodo, so he changed it.