This article is about the King of Khazad-dûm. For the other namesakes, see Thráin (disambiguation).

Thráin I, also known as Thráin the Old, was the son of Náin I and King of Durin's Folk, as well as the first King under the Mountain.


After Thráin's father was slain by the Balrog known as Durin's Bane, as his grandfather Durin VI had been killed the year before, Thráin I fled Khazad-dûm with the remainder of his people, succeeding Náin as King of Durin's Folk. Thráin led his people to the Lonely Mountain, where he established the Kingdom under the Mountain in TA 1999. He was succeeded as king by his son Thorin I upon his death in TA 2190.[1]

Portrayal in adaptations

In The Lord of the Rings Online Thráin I appears in a flashback narrating the history of Fram and Scatha. It was he who received the necklace of Scatha's teeth after laying claim to the dragon's treasure, becoming greatly enraged at Fram's affront.

Translations around the world

Foreign Language Translated name
Czech Thrain Starý
Hebrew תראין הראשון
Norwegian Thráin I
Thrain I a.k.a. Thrain den gamle
Russian Траин I
King of Durin's Folk
Preceded by
Náin I
Thráin I Succeeded by
Thorin I
TA 1981 - TA 2190
King under the Mountain
Preceded by
Thráin I Succeeded by
Thorin I
TA 1999TA 2190


  1. The Lord of the Rings, Appendix A: Annals of the Kings and Rulers, III: Durin's Folk
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