As we know, after they left White Harbour, Lord Wyman Manderly had the three Freys, Jared, Rhaegar, and Symond, killed and baked into three huge pies. These pies he later served to the Boltons and Freys at Winterfell. While at the feast, Wyman gets outrageously drunk and asks for the song about the Rat Cook.
Lord Eddard Stark, the Hand of the King to Robert I Baratheon, instructs his wife Catelyn to have Ser Helman Tallhart and Galbart Glover fortify Moat Cailin with a hundred bowmen each.
The Umbers are another Northern house, and were bannermen to the Starks. We last saw Rickon when he was traveling with older brother Bran, the wildling Osha, plus Hodor, Meera, and Jojen. When Bran decided he had to go north of the Wall, and realized it would be too dangerous for Rickon, the two parted ways.
House Umber of the Last Hearth is an extinct vassal house that held fealty to House Stark of Winterfell. Their lands were in the far north of the Stark territories, just south of the Wall and the lands held by the Night's Watch.
House Glover of Deepwood Motte is a noble house from the Wolfswood in the North of Westeros. They are loyal vassals of House Stark of Winterfell, and have their seat at the wooden stronghold Deepwood Motte. Their lands extend throughout the Wolfswood, northwest of Winterfell.
The Skagosi are said to live in caves or mountain fastnesses. Traders claim the lords of stoneborn clans ride shaggy unicorns. The people of Skagos are generally despised by the rest of the northmen, who derisively call them "Skaggs".
Davos Seaworth in A Song of Ice and Fire
In A Dance with Dragons, Davos was last seen at White Harbor and assumed to be going to find Rickon Stark on Skagos. Davos will likely stay with them, as the coming winter will make travel difficult.Davos is sent to White Harbor, the city of House Manderly in the North, by King Stannis to arrange an alliance with Lord Wyman Manderly.
The thousand year old ambition of House Bolton to take control of the North, which the Lannisters promised. Roose Bolton suspected that the war was lost now that King Robb had lost the support of the Freys due to him breaking his marriage promise. So he decided to back the winning horse: House Lannister.
The disguise is applied using the blood, drawn in tribute, running down Arya's own cut face. In the books as well as on the show, Jaqen H'ghar changes his look by simply waving his hand in front of his face. Obviously, in the show, Arya Stark is not cutting up her own face every time she puts on a new face.
Arya travels to the Twins, assuming the identity of a servant girl. She kills Lord Walder Frey's sons, Black Walder Rivers and Lothar Frey, before cooking them in a pie that she serves to Walder Frey. After revealing her subterfuge and her true identity to Walder, she cuts his throat, avenging Robb and Catelyn.
Arya kicked off Season 7 of Game of Thrones in the most badass way by killing all of House Frey in the name of the North. She did so by using Walder Frey's own face to call a family meeting, and then poisoned them after giving a speech about their part in the Red Wedding.
Brynden Tully, the Blackfish, escaped the Red Wedding, hid out in the Riverlands, then mustered sufficient forces to retake Riverrun. When Jaime forces the surrender of Rivverun, the Blackfish escapes again. (In the show, he gets killed off camera.)
"When people ask what happened here, tell them the north remembers," Arya said to the Frey girl beside her. "Tell them winter came for House Frey."
Lord Roose Bolton, personally killed the injured Robb Stark with a dagger thrust to the heart. "Lame" Lothar Frey, stabbed Queen Talisa Stark to death.
Arya not only killed the Freys, but two of them (Lothar and Black Walder) were carved into pieces and baked into a pie. In both the books and the show, one of his sons was present at the Red Wedding and was killed fighting to defend Robb Stark from the Freys.
She travels north to the Bolton seat of the Dreadfort. The Freys' actions during the Red Wedding earn them the enmity and disdain of the Riverlands and the North. Since the Freys were granted paramountcy over the Riverlands, the region has disintegrated into a state of lawlessness.
Arya not only killed the Freys, but two of them (Lothar and Black Walder) were carved into pieces and baked into a pie. Arya then served the pie to their father, Walder Frey, before revealing herself as a Stark and slitting his throat.
Then, in perfect "reverse Red Wedding" fashion, Walder/Arya gave a speech while every male descendant of House Frey drank deeply from their poisoned goblets. "I'm proud of you lot," Arya said. "You're my family, the men who helped me slaughter the Starks at the Red Wedding."
Arya Stark (Maisie Williams) got her revenge on Lord Walder Frey (David Bradley) at the end of “Game of Thrones” Season 6, killing him after feeding him two of his sons that she baked into a pie. With her Faceless Man powers, Arya took on Walder Frey's identity and called another feast of the rest of the Freys.
After serving Walder Frey a pie made out of his two sons — Black Walder and Lothar — in the finale of Game of Thrones' sixth season, Arya Stark revealed her true face to the Lord of the Crossing before slitting his throat.
