Severus knew they had been lucky that they got in and out of the Gryffindor tower so quickly and without bumping into anybody horrible.
"Barnabas the Barmy?" He worried his bottom lip thoughtfully. "That name does sound familiar." Severus had roamed the castle a lot just to find a nice quiet place to read, study and get away from idiots.
"Oh..." He remembered seeing the strangest painting of a wizard teaching trolls how to dance, if he remembered correctly that was Barnabas. "I think it is on the seventh floor."