Muggles. Snape had guessed that most of the residents were those, but hearing it out loud was a sad confirmation for him -- he wasn’t much of a fan of those who couldn't use magic. Speaking of people who weren't a fan, this young man didn’t seem to have much love for him -- not from the way he straightened up and his expression went somewhere between surprised and upset.
By now, Severus was aware that the time was off -- that some of these people here had once been his students or would be his students depending on when they came from. This was not someone he recognized, not really -- maybe there was some thing about the roundness of his face, but it wasn’t enough of a clue and to be able to guess who he might be related to without hearing a name first.
In any case this was dangerous business, not knowing who was from when or where or who actually knew him or what he was doing or had done – Severus had more secrets than most and they were his business and his alone for the time being -- being caught out would not be a boon.
“Yes,” he said, and it came out slow, almost accusing, like he was upset that this man knew his name well, he was kind of upset about that he was not a big fan of being at a disadvantage particularly in the way of information, most people we’re less inclined in the way of intelligence and he didn’t like feeling like The tables have been turned. “And you are?”