From Tolkien Gateway

The River-woman, said to be the mother of Goldberry, was a possibly fictitious character mentioned only in a verse as being associated with the Withywindle of the Old Forest.

In a poem, Tom Bombadil was pulled into the river by the swimming Goldberry. She swam "back to her mother's house in the deepest hollow". Later, Tom returned to the river and asked the River-woman for Goldberry's hand; she complied unquestionably, so the two were married.[1]


Tom Bombadil


Legendary races of Arda
 Animals:  Dumbledors · Gorcrows · Hummerhorns · Pards · Swans of Gorbelgod · Turtle-fish
Dragon-kind:  Sea-serpents · Spark-dragons · Were-worms
Evil Races:  Ettens · Giants · Half-trolls · Hobgoblins · Ogres · Snow-trolls · Two-headed Trolls
Other:  Badger-folk · Great beasts · Lintips · Mewlips · Nameless things · Otter-folk · Spectres
Individuals:  Badger-brock · Fastitocalon · Fisher Blue · Lady of the Sun · Lonely Troll · Man in the Moon · Old Swan · Talking Gurthang · Talking purse · The Hunter · The Rider · River-woman · Tarlang · Tim · Tom · Whisker-lad · White cow · Willow-wren