Dís (born Third Age 2760) was a female Dwarf of the royal line of Durin's folk. She was the daughter of King Thráin II and sister of Thorin Oakenshield and Frerin. Like her brothers she was born in Lonely Mountain and was driven into exile in 2770 when the dragon Smaug sacked the kingdom. She was the mother of Fíli and Kíli, and the only dwarf-woman ever named by Tolkien.
Female Dwarves are rare in Middle-earth, making up about a third of the population of Dwarves, and seldom are seen by others. When they are seen, they are often mistaken for male dwarves, because (according to rumour) they too have beards.
Thráin II | ________|__________ | | | | | | Thorin II Frerin DÍS Oakenshield | ___|___ | | | | Fíli Kili