Lord of Moria
From Tolkien Gateway
A title for the Kings of Durin's Folk, rulers of Khazad-dûm through its long history, who were descended from its ancient founder, Durin the Deathless. In Elvish, the title was Aran Moria, and the original Dwarvish form was Uzbad Khazaddûmu. Though the title is used to refer to the historical Kings, it is most prominently associated with Balin, who reclaimed Khazad-dûm for a brief time between III 2989 and III 2994.
