When did tom bombadil first meet goldberry?

Answer 1

Tom first met Goldberry in the Adventures of Tom Bombadil, a collection of poems Tolkien wrote in the 1930s. At what time period this episode takes place is almost impossible to discern, but it is most likely to have occurred in the First Age or possibly the early second.

Answer 2

Tom only said that they met by the Withywindle long ago. Tom and Goldenberry are intended to be whimsical and mysterious, so we are never given too many details about them.