Esca still finds this a bit ridiculous, and it shows on his face. "Seal is very good for eating. Strengthens the spirit." He feels like an old housemother saying this, but it's true.

"Ah!" Esca says, suddenly inspired. They have a reference point-- Londinium, London-- and can understand things from there. "I have been north of Londinium, very north. Likely I have been where Nottingham now stands. Eboracon is very north of your London." He pauses a moment, thinking. Common ground is good, best to foster it. "Before the Romans, the Cantiaci and the Catuvellauni lived in Londinium." Esca never thought he would be an arbiter of old knowledge, but it seems important to relate to this confused girl who has probably never eaten a seal.