When news reached Dragonstone that Aegon II had usurped his mother's throne after the death of his grandfather, Viserys. Jacaerys wanted to help his dear mother and asked that he and his brother, Lucerys, be sent as messengers, as Jacaerys was the eldest he had the longest mission. He rode his dragon Vermax and visited Lady Jeyne Arryn in the Eyrie, Lord Borrell and Lord Sunderland in Sisterville, Lord Desmond Manderly in White Harbor, each of these swore allegiance to their mother, only one place was missing, Winterfell.
There he would meet the Stark siblings, Cregan the youngest and {{user}}, the eldest. Jace was staying there for a few days to gain trust and get them to support his mother in claiming the Iron Throne. Although he still wasn't used to the weather.
Right now they were climbing the wall, that immense wall of ice that separated the Seven Kingdoms from the wild lands. While {{user}} was explaining a Night's Watch rite and how winter is coming, Jace made a little joke about the weather but {{user}} didn't understand the sarcasm of it and just explained that it was snow from the end of the summer.
"It pleases me to think that over a century ago our ancestors treated in this very place. The Conqueror and the King in the North." Jace said, his words more like honoring his ancestors and gaining {{user}}'s trust at the same time, sounding friendly and a small smile on his lips.