After the death of Thorin in the Battle of Five Armies, Dain becomes King under the Mountain. He redeems the Arkenstone from Bard with a fourteenth of the treasure, which is used to re-establish Dale. Over the next three years, Bard rebuilds the city of Dale and becomes its ruler.
After Thorin's death, his cousin Dáin II Ironfoot of the Iron Hills became king of Durin's folk; and when news reached Durin's folk in the Ered Luin that Erebor was retaken, it is believed that most of them moved to the Lonely Mountain. Therefore, Thorin's hall became a sub-realm of Durin's folk.
The new King Thrór led a great part of his people back to Erebor, and re-established the Kingdom under the Mountain (while other Dwarves followed his brother Grór to found a new realm among the Iron Hills).
Nope. Thorin, Fili, and Kili were the male heirs of the first line of Durin, the dominant line. They were the ones in line for the crown and the kingship, in that order. When they died, the first line of Durin was extinguished, but not the line altogether.
The Arkenstone remains forever out of reach, but stays with the people who protected it, and who used it to create the mighty kingdom in the first place.
Myth: Gimli is the last dwarf.
Though Gimli has no children, he is not the last Dwarf of Middle-earth. After the fall of Sauron, his people continued to thrive in the Lonely Mountain. Gimli made his home in Rohan, in the Glittering Caves of Aglarond, and many of his kinsfolk came with him.
He also understands that there are far more drastic things at stake, and that if Erebor falls into Sauron's hands, the world is doomed. Thus, he is willing to endanger the lives of a few to save the lives of many.
The Dwarves dug too deep, greedy for mithril, and disturbed a demon of great power: a Balrog, which destroyed their kingdom. By the end of the Third Age, Moria had long been abandoned by the Dwarves, and was a place of evil repute.
Even after the end of the War, many Dwarves refused to reclaim Moria, partially because of the Durin's Bane. Years later however, the Dwarves managed to reclaim the Lonely Mountain.
It told how Balin discovered Durin's Axe, and established a small colony, but it was overrun by orcs and Balin was killed by an orc archer in Dimrill Dale. Thus he died in the same place as his father, having been self-proclaimed Lord of Moria for less than five years.
Although Thráin II becomes the King under the Mountain, his boastful arrogance gets the better of him. Thráin II is driven mad with grief when Smaug overruns his forces. Although he is assumed to be dead, Thorin does not find his father's body among the fallen in Moria.
Erebor, also known as the Lonely Mountain, was lost for 171 years before Thorin began his quest to reclaim his homeland. Following the destruction of Smaug and the Battle of Five Armies, the Dwarves freed the Lonely Mountain and settled there once more.
Radagast appears in The Lord of the Rings: War in the North, where he flees from his home in Rhosgobel during the War of the Ring to one of his hideaways in Mirkwood. There Radagast is captured by the spider Saenathra, at the behest of Agandaûr. Radagast is later freed by Eradan, Farin and Andriel, who kill Saenathra.
Thrór. Thrór was grandfather to Thorín Oakenshield and father of Thráin. He died in the Mines of Moria after his kingdom was stolen by Smaug the dragon.
Yes. Gandalf and Balin visited him seven years later. And we know Dwarves kept visiting him right up to his 111th birthday, and accompanied him when he left.
Although Gimli knew that Moria could be dangerous in the book, he did not know about Balin's death in The Lord of the Rings: The Fellowship of the Ring movie possibly due to slow communication and Dwarves' perception of time.
Gimli, the dwarf, did not know that Moria had fallen because he was not present during the events that led to its fall.
Nevertheless everything went well as the Dwarves were fiercely determined to take back their home, slaying every goblin in their path, eventually some of Moria was reclaimed and they dwelt in the Twenty-first Hall until Balin moved to the Chamber of Mazarbul, which then became his seat of rule.
In The Lord of the Rings Online, after a minor appearance depicting the Siege of Erebor, Erebor proper was added in 2018 as part of Eryn Lasgalen and the Dale-lands. After the breaking of the siege, it is now ruled by King Thorin III Stonehelm who must deal with some of the enemy's army still remaining near his lands.
Erebor, also known as the Lonely Mountain is a Dwarf realm featured in The Hobbit and mentioned in Lord of the Rings.
Bilbo did go to Erebor (in the book) when he left Bag End and the Ring. He went there and then came back and settled in Rivendell. But then, in the book there were 16 years between his leaving and the beginning of the War of the Ring so he had plenty of time for a leisurely journey and a good long visit.
Each of the Seven Fathers founded one of the seven Dwarf clans. Durin I was the eldest, and the first of his kind to awake in Middle-earth.
Legolas went to Ithilien with some of his people, where he helped to restore some of the woodlands that had been ravaged by the war. He also helped rebuild the Woodland Realm as a whole, as it was his home.
He was a remote descendant of Durin the Deathless, chief of the Seven Fathers of the Dwarves and ancestor of the Longbeards. Gimli was of the royal line, but not close to the succession; he was the third cousin once removed of Dáin II Ironfoot.