Grór

Grór is the son of Dáin I in the House of Durin, and the younger brother of Thrór and Frór. He is also the father of Náin and grandfather of Dáin Ironfoot

History
Grór was born into the House of Durin in T.A. 2563 during its last troubled years in the Grey Mountains. He was the youngest of the three sons of King Dáin I, who ruled Durin's folk during their war with the Dragons from the Northern Waste. When Grór was just twenty-six years old, a Cold-drake attacked Dáin's halls, and killed his father and brother, Frór.

The two remaining sons resolved to leave the Grey Mountains with their people and settle elsewhere. As the elder brother, Thrór inherited the Kingship, and led his people back to Erebor in the southeast. Young Grór however traveled east, to the Iron Hills, where he founded a realm of his own becoming the first Lord of the Iron Hills

He later had his son and grandson fight in the Battle of Moria because of his old age.

Etymology

 * The name "Grór" (like "Gróin") is derived from Old Norse gróa ("to grow"), thus meaning "Growing-one".