Inbar is a Longbeard dwarf hailing from the Grey Mountains whence Durin, the Deathless came.

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Inbar's family originally lived in the Grey Mountains, but after the attack of the Dragons they went in exile to the Iron Hills, where Inbar was born.

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For many years Durin's folk prospered in the Grey Mountains, but the Dragons in the wastes beyond began to multiply again and made war on the Dwarves in T.A. 2570, and plundered their works. After 19 years the War of the Dwarves and Dragons came to an end when a great Cold-drake killed King Dáin I, and his second son Frór at the door of his hall. A year later most of Durin's folk abandoned the Grey Mountains. Farin, father of Inbar went with many followers to the Iron Hills. In the mean time, the new King Thrór along with his uncle Borin, and the remainder of the people went back to Erebor.