His birth was prophesied by the Dwarves in the conclusion of the Battle of the Five Armies, that in the direct line of Dáin II Ironfoot there will be an heir, but the last of his line. Durin VII travelled from the Lonely Mountain to re-establish Khazad-dum and root out the orcs who lived there. After that he refounded the great Dwarf kingdom and his people prospered once more.