Click here to reveal spoilers for Golems of Amgarrak.
At 9:31 Dragon House Dace mounts an expedition led by Brogan Dace to reach Amgarrak Thaig and find out what happened to the dwarves who lived there but most importantly to recover the valuable research. However when Jerrik Dace does not hear back from the expedition he contacts the Warden-Commander of Ferelden for assistance. Together they save Jerrik and discover what happened in Amgarrak.
At 9:41 Dragon the fellow noble House Helmi is trying to mount an expedition to Amgarrak Thaig however their attempts are halted and opposed by House Dace.
The BioWare wiki mentions that Jerrik Dace is the nephew of Lord Anwer Dace which contradicts this codex entry. Furthermore, it mentions that Mandar Dace is the son of Anwer Dace which also contradicts to the established in-game lore. It is not known which one of these versions is correct.