Thrain

Prince Thráin II was the father of Thorin Oakenshield, Frerin, andDís, the grandfather of Fíli and Kíli and son of Thrór
== History ==
Thráin fled with his father and a small group of companions when the dragon Smaug in T.A. 2770 descended on Lonely Mountain and sacked the Dwarven kingdom. King Thrór, Thráin, and the others eventually settled in Dunland and scratched out a meager living. Thrór was devastated by the loss of Erebor and left his people to journey north. He took a single companion, Nár, but left his son with his Ring of Power, along with the map and key to Lonely Mountain.
In T.A. 2790 Nár returned to tell Thráin that his father had been captured and butchered by the Orc-chieftain Azog when they had journeyed to the mines of Moria. Even worse, Azog had beheaded Thrór and carved his own name on Thrór's forehead to show the Dwarves that an Orc now ruled their ancestral home.
Thráin sat for seven days without speaking, until he stood and said "This cannot be borne!".
=== War of the Dwarves and Orcs ===
Filled with righteous anger, by T.A. 2793 Thráin had gathered together a massive army of Dwarves to wage the War of the Dwarves and Orcs. The army included the exiles of the Lonely Mountain, Thráin's kin from the Iron Hills under his uncle Grór, and even some Dwarves not of Durin's folk (probably the four Dwarf clans from the Orocarni in the east). One by one they assaulted the Orc-holds of the Misty Mountains, destroying their great warrens in Mount Gundabad and eventually facing Azog himself in Dimrill Dale (Azanulbizar in Khuzdul) before the East-gate of Moria.
In T.A. 2799 Thráin and his army fought the bloody Battle of Azanulbizar. Thráin was blinded in one eye and suffered a leg-wound. While the Orcs were vanquished and Azog slain, the Dwarves took heavy losses, including Thráin's son Frerin, his cousin Náin, and Fundin father of Dwarven hero Balin.
King Thráin II wanted to enter Moria and reclaim it, but the Dwarves not of Durin's folk refused, saying that the city was not their Fathers' House; they had honoured Thrór's memory by fighting, and this was enough. Dáin Ironfoot had peered within the East-gate and also warned Thráin that Durin's Bane still dwelt within Khazad-dûm.
Old and delirious, Thráin is again seen later at Dol Guldur when Gandalf arrives to investigate. He tracks the Wizard, and ultimately attacks him in a fit of madness. Gandalf is able to overtake him and calm him. Thráin warns Gandalf to not let Thorin near the Lonely Mountain because he has learned that Smaug is in league with The One. He ultimately helps Gandalf navigate through the fortress before Azog and several other Orcs attack. The two of them try to escape but are eventually stopped by the shadow of the Necromancer. Thráin tells Gandalf to tell Thorin that he loved him, and is swallowed up the shadow, which then reveals itself as Sauron to Gandalf.