Once Upon a Time in Faerûn
Clan Battlehammer is a clan of shield dwarves from based in Mithral Hall.
The original residence of the clan was Mithral Hall, where the Gandalug Battlehammer reigned as the first king some time before 0 DR. The hall was an underground town and mine, as the mountain was rich in mithral ore.
Mithral Hall was abandoned in the 1100s DR when the shadow dragon Shimmergloom and hordes of duergar claimed the settlement for themselves after the dwarves in Mithral Hall dug too deep in search for mithral and disturbed the dragon. Only a minority of the clan escaped, including young Bruenor.
The survivors of Mithral Hall migrated away, the majority ultimately settling in Icewind Dale, in a valley in front of Kelvin’s Cairn in Icewind Dale. They created a new home for themselves in the dale, where they remained for two centuries. They traded dwarven-made equipment to the Ten Towns.
Return to Mithral Hall
In 1356 DR, Bruenor Battlehammer returned to Mithral Hall. With the help of other adventurers such as Drizzt and the other Companions of the Hall, he intended to vanquish Shimmergloom and make Mithral Hall his home once more. Although Bruenor seemingly died killing the dragon, he survived and with the help of dwarves from Citadel Felbarr, he successfully cleared out the tunnels by 1357 DR. Mithral Hall became, once again, home to Clan Battlehammer.