"William," William corrected immediately, because he and Nate were a year apart at school and they were in the middle of a crisis situation, and if that didn't call for familiarity he didn't know what qualified.
"I'm heading to the Great Hall," he said, glancing around to make sure they hadn't attracted any unwanted attention. "Most of the students are holed up in there, apparently, we can go together." It wasn't far, and it was the closest safe place William knew of. Hufflepuff was also a good choice, but Jon was in the Great Hall, and William was a fan of killing two birds with one stone. Particularly when it meant half the chance of running into toothy, flesh-eating, undead creatures.