Náin II
From Tolkien Gateway
Náin II was a King of Durin's line, successor to Óin. He led the Dwarves of Durin while they abode in the Grey Mountains. Late in his reign, dragons came south out of the Forodwaith, and began to assail the Dwarves.
Náin was 247 years old when he died, having reigned as King for 97 of those years. He was succeeded by his eldest son Dáin, who became King Dáin I.
