Thráin I

Thráin I, sometimes Thrain the Old, was the son of Náin I, and succeeded his father as King of Khazad-dûm. When his father was slain by the Balrog as his grandfather Dúrin VI had been killed before, Thráin I fled Khazad-dûm together with the remainder of Durin's folk, migrating to Erebor, which he founded in 1999 T.A.. He was succeeded as King by Thorin I.