The barrier master spilled everything that he knew even some answers that they did not ask. The only problem for Adrian is that the things that he knows is limited to the group that he was a part of. He did know that there was a separate group that came with them from the eastern continent and that they apparently went to their partners in the central continent.
He did say important things such as the Branch Master of the Eastern Continent Merchant Guild was the one that placed him with Lady Goldenclaw. He would always protect her and make sure that she will return back to the eastern continent. The barrier master even told them that the branch master talks as if her daughter was her own possession and not a human being, but he only cared about being paid. He only did what was asked of him with no questions asked as that is the way to survive longer in large organizations.