Halmur Stoneshaper, a descendant of the original Halmur Stoneshaper, son of Vithurr, has been charged with guarding the strongbox you seek until all its contents are returned.
'I see... so you were sent by a dwarf from the Blue Mountains, were you? Perhaps it is the long years alone here, but I believe you. Now, allow me to tell you a tale.
'Long ago, the first Halmur Stoneshaper, son of Vithurr, was charged with guarding the treasures here. He stood sentry day and night, maintaining his post even on days of feasting. Yet he let his guard drop, only once, and a vile dwarf, Hjortur Dourhand, slipped in and stole a single ingot of dwarf-gold. Having failed in his duty, Halmur swore that he and his sons would keep vigil over the remaining gold until that ingot was returned. I am but one in a long line of Halmurs who have kept his oath.
'If you return the stolen ingot, the oath will be fulfilled. The strongbox will then be yours to return to the dwarf who sent you. I cannot say, though, where to find Hjortur, although the legends of Halmur's failure tells that Hjortur is somewhere within Gabilazan. Perhaps there you will be able to find the gold.'
The stolen ingot might be found within the walls of Gabilazan.
Halmur Stoneshaper suggested you seek the stolen ingot there.
The stolen ingot might be inside Hjortur's strongbox, within the walls of Gabilazan.
You defeated Hjortur Dourhand and should now search the strongbox he guarded for the stolen ingot.
Halmur Stoneshaper is in the tomb of his ancestor on the hill to the left as you approach the dwarf-keep in the pass of Gabilazan from the north.
Halmur Stoneshaper is waiting for you to return with the stolen dwarf-gold ingot you retrieved from the descendant of the thief who stole it long ages ago.
The second strongbox is within the tomb of Halmur Stoneshaper in the pass of Gabilazan. Larus Sharpshard is located in a camp north of High Crag.
After helping Halmur Stoneshaper reclaim the stolen ingot and fulfil his family's oath, he has allowed you to take the strongbox to bring it to Larus Sharpshard.