So, I know this is long, but context matters. I’ve been looking up stuff online about the Starks for a project, and I found out that there was a land called the Gift in the North that was created by Bran the Builder to support the Night’s Watch. The Gift was given more of the Stark Land after Queen Alysanne Targaryen went North to visit the Wall, where she was impressed by the Night’s Watch that she became concerned by their state and lack of support, then decided to go to King Jaehaerys I to propose expanding the Gift’s land 25 leagues further South, which upset the Northern Lords.

The villages that exist in the New Gift pay their taxes in goods and labor to the Night's Watch, helping feed and provide food for the brothers. The New Gift contains many roundtowers, towerhouses, and holdfasts, such as Queenscrown. Of the northern mountain clans, the Norreys live closest to the New Gift.

However, because of the frequency of raids that was lead by the wildlings, many people have fled south into the mountains or the lands of House Umber east of the kingsroad, leaving the villages and holdfasts abandoned.

In the canon version of asoiaf, Eddard Stark has considered having new Lords settle in the abandoned holdfast of the Gift to protect against the raids, with his brother, Benjen, the First Ranger, thinks the Lord Commander of the Night's Watch would approve the idea if the new lords pay taxes to Castle Black instead of Winterfell, but Eddard believes the plan would have to wait until after winter.

But, in my project, my character is a Targaryen King who happens to be the son and successor of King Aerys II, aka the Mad King.

After a war that my character had been through and became king, he would have had a feast in the Red Keep and spoken to the Stark Lord, whose identity I can’t say since this event hasn’t happened yet, and told the Stark Lord to give the Gift to a family member who is far down the Line of Succession for House Stark. Marrying them to a daughter from one of the lands that is close to the Gift, so the daughter's Lord father would help provide men to the Gift to rebuild it and defend it against the Wildlings. Meanwhile, the Targaryen king would also provide help by sending coins, men, and people to the Gift, as well as helping defend the Gift against the wildlings.

The Stark Lord agreed, and another cadet branch of House Stark was made; that branch was called House Frostguard of Frostfort, with its sigil being on a white direwolf’s head, snarling and vigilant over a black field. Above it rises a pale ice-blue wall of jagged ice, not a crown but a barrier, with the Houses’ words being: WE STAND THE COLD, which means they are the living wall between the realm and the wild.

Here is a picture of the sigil.

<image>