The official lorebook for Lord of the Rings Online has been updated, this time featuring the NPC Goldberry:

Middle-earth holds many strange mysteries and enigmas, but none quite so unusual as the River-maidens. These beautiful creatures, Man- or Elf-like in appearance, are born of the waters of secluded rivers. What they are exactly is unknown even to the Wise, but they are old and powerful.

Perhaps the best known of these is Goldberry, daughter of the Withywindle in the Old Forest on the borders of Buckland. She once tried to snare the equally mysterious Tom Bombadil, and though old Tom escaped her grasp, he eventually returned and took her to wife. Now together they dwell in seclusion in the Old Forest, away from the rest of the world.

Goldberry is one of many NPCs in LOTRO which was drawn from J.R.R. Tolkien's The Lord of the Rings novel. Their depiction in The Lord of the Rings Online™: Shadows of Angmar™ marks one of the first major appearances Tom and Goldberry have made outside of the novels.

There is an included map at the link above so, if you want to find Goldberry, check it out.