|Date of birth||TA 2644|
|Date of death||TA 2880|
|Family||House of Dúrin|
|Lord of the Rings film trilogy|
After a great Cold-drake killed both Thrór's father and brother, Cori was among the many dwarves that were led away from the Grey Mountains and accompanied Thrór to Lonely Mountain in the year TA 2689. After Grór continued east with a great following of Dúrin's Folk to the Iron Hills, where he founded his own realm, Cori would later marry Thrór, and became Queen of Erebor.
During her lifetime in Erebor, Cori and her people re-established the Kingdom under the Mountain and became very prosperous. gained the friendship of the Northrons who lived along the river Celduin. These people later founded the city of Dale and had much trade of goods, beautiful trinkets, and weapons with the Dwarves. The Dwarves of Erebor also had much traffic of ores with their kinsman in the Iron Hills and the region had peace and prosperity for many years.
In TA 2880, she was present when her husband brought forth the the Arkenstone back to Erebor. She started to grow worried when her husband started to succumb to a sickness after refusing to pass the gems to Thranduil, King of the Woodland Realm. That was when the dragon Smaug came after he heard of the wealth of Thrór and his people. He flew south from the Ered Mithrin and sacked the Lonely Mountain, killing many Dwarves. From the destruction many escaped, but Cori and her daughter-in-law were killed.