So he pulls out maps, shows her where they are and where Sirion is. "The population is a mix of survivors of the fall of Gondolin, the fall of Nargothrond, and the fall of Doriath. The ruler is Idril, who was the princess of Gondolin. Her true name is Itarillë," He's sending images of faces. "I haven't seen her since she was a child, I'm sure she's changed. Her husband is Tuor. Her son Eárendil is married to Elwing. They have two young children, Elrond and Elros." And so on.