"Albus? Albus... Potter," Severus repeated, "Fascinating namesake..." He let the comment hang, his mind distracted more by the last name.
After his time... Potter... Those two concepts percolated through Severus conscious as he regarded the man in front of him. The corner of his mouth twitched at the recitation of the name of his most despised enemy, but he remained still. This man in front of him was either Lily's other son - those were Lily's eyes - and Severus's heart skipped a beat. If she had more sons perhaps she'd lived, his efforts had paid off, his mistakes redeemed. Or, this could be Lily's grandson, an option that didn't carry as much hope as the first. But all the same, since arriving in this place Severus's mind had been weighted down with worry, worry he hardly dared let himself think about for fear of being consumed by it, and even if this man was Harry's son, he would have information.
"Potter's son?" Severus queried rather harshly, though it was more because he was desperate for information, than for any irritations. He didn't care about the couple studying at the next table, if they wanted peace and quiet they could find a new table. But, he paused to calm his nerves, and to control his voice before continuing. He wanted answers and scaring the other man, Albus, away would not achieve that end - the other man's hesitation over giving up his name clearly passed Severus's notice. "James's or Harry's?"