he gets the shield but
he decides to give it away to the kingdom. In this arc he actually gets nice items better than that shield, the shield is not very important since its a low level shield but its legendary. He marries the npc daughter of earl steim irene.
About Marie Rose __ spoiler
she is a (named npc) vampire who has lived for a long time and she is actually an enemy but she is so super strong, that she doesn't even care about Grid. she is in a category of a few individuals (above the legendary class pagma descendant) that if i were to tell you about i would be spoiling you like 1000 chapters of the novel. As of today chapter 1372 in the novel Marie Rose is still strong.