The lord examines Gregory,his attire is quite different that theirs.Maybe he is from the future too? but if so, he does`t know what Ylisse is as Gaius mentioned briefly.
“Well met,Gregory. I am Chrom.” there was no need to inform the other of his title.Someone people get scared when nobles talks to them.How about the Royal family?
Chrom glanced over his shoulder to the map,”I see.” Shifting his sight to Gregory he said,”And where are you from?” he was going along with his story.There is no evidence that he is a spy to suspect him for it.
The boy stood up and walked over to the map. Taking in account the direction he walked and the quick look at a map he had from a disgruntled ferryman, he pointed to a small island to the south. “Here,” he stated, turning around. “There was this gate, and once I was through, I was barred reentry,” he explained, recollecting what had happened to him since his arrival to this mysterious land. “On the other side of it, I was from a city called Iwatodai.”