Mostly posting this to hear from others who might recommend some changes. If you do have some suggestions, know that my deck is built for a melee format and I really like Bear Island! You will notice I have most of my cards, by necessity, coming from LoW and Core sets. Based on feedback I receive here, I will likely pursue other chapter packs!

Characters (30)
Dire Wolf Pup (Core)
Dire Wolf Pup (Core)
Jeyne Westerling (ASoS)
Shaggy Dog (Core)
Shaggy Dog (Core)
Hodor (Core)
Guard at Riverrun (LoW)
Guard at Riverrun (LoW)
Guard at Riverrun (LoW)
Kennel Master (Core)
Lady (Core)
Osha (DotN)
Wolf Pack (LoW)
Wolf Pack (LoW)
Wolf Pack (LoW)
Catelyn Stark (LoW)
Catelyn Stark (LoW)
Host of the Bear (LoW)
Host of the Bear (LoW)
Host of the Bear (LoW)
Eddard Stark (Core)
Eddard Stark (Core)
Robb Stark (Twot5K)
Robb Stark (Twot5K)
The Blackfish (LoW)
The Blackfish (LoW)
King Robb's Companions (LoW)
King Robb's Companions (LoW)
Edmure's Host (LoW)
King Robb's Host (TWot5K)

Locations (15)
Bear Island (AE)
Godswood (LoW)
Godswood (LoW)
Godswood (LoW)
Lord Eddard's Chambers (LoW)
Northern Fiefdoms (Core)
Northern Fiefdoms (Core)
Northern Fiefdoms (LoW)
Wolfswood (LoW)
Great Keep (Core)
Great Keep (Core)
Great Keep (LoW)
Narrow Sea (Core)
Narrow Sea (LoW)
Narrow Sea (LoW)

Events (10)
Distraction (Core)
Support of the Kingdom (Core)
At Night They Howl (LoW)
Die by the Sword (LoW)
Die by the Sword (LoW)
Die by the Sword (LoW)
Winter is Coming (Core)
Winter is Coming (Core)
Guilty! (Core)
Guilty! (Core)

Attachments (5)
Summer (Core)
Grey Wind (LoW)
Shaggydog (LoW)
Crown of Winter (LoW)
Icy Catapult (TWot5K)

Plot (7)
The Power of Arms (Core)
The Power of Arms (Core)
The Minstrel's Muse (RotO)
Storm of Swords (LoW)
Storm of Swords (LoW)
Take Them by Surprise (LoW)
Take Them by Surprise (LoW)

Goofed - This is running the Agenda: Siege of Winterfell

Quick observation -

You have an illegal plot deck. The only plot you may have 2 of is Power of Arms so you will need to find 2 more plots to replace a copy of Take Them by Surprise and a copy of Storm of Swords.

Another quick observation:

You have Greywind and Shaggydog versions of both characters and attachments. You will not be able to play these as both types simultaneously. For example - If Shaggydog the character is currently in play, and you have Shaggydog the attachment in your hand, you will not be able to play it as an attachment on any character. You'd only be able to use it as a duplicate of the character version of Shaggydog. The same goes for Shaggydog that is already played as an attachment. If Shaggydog the character is in your hand, it can only be played as a duplicate on the Shaggydog attachment that is already in play.

I recommend choosing one type of these cards and sticking to that.

Here is the updated version with corrections - thank you. I might add that I won my first joust with this deck earlier this evening.

Characters (30)
Direwolf Pup (Core)
Direwolf Pup (Core)
Jeyne Westerling (ASoS)
Shaggy Dog (Core)
Shaggy Dog (Core)
Hodor (Core)
Guard at Riverrun (LoW)
Guard at Riverrun (LoW)
Guard at Riverrun (LoW)
Kennel Master (Core)
Bran Stark (LoW)
Osha (DotN)
Wolf Pack (LoW)
Wolf Pack (LoW)
Wolf Pack (LoW)
Catelyn Stark (LoW)
Catelyn Stark (LoW)
Host of the Bear (LoW)
Host of the Bear (LoW)
Host of the Bear (LoW)
Eddard Stark (Core)
Eddard Stark (Core)
Robb Stark (KotS)
Robb Stark (KotS)
The Blackfish (LoW)
The Blackfish (LoW)
King Robb's Companions (LoW)
King Robb's Companions (LoW)
Edmure's Host (LoW)
King Robb's Host (TWot5K)

Locations
Bear Island (AE)
Godswood (LoW)
Godswood (LoW)
Godswood (LoW)
Lord Eddard's Chambers (LoW)
Northern Fiefdoms (Core)
Northern Fiefdoms (Core)
Northern Fiefdoms (LoW)
Wolfswood (LoW)
Great Keep (Core)
Great Keep (Core)
Great Keep (LoW)
Narrow Sea (Core)
Narrow Sea (LoW)
Narrow Sea (LoW)

Events (10)
Distraction (Core)
Support of the Kingdom (Core)
At Night They Howl (LoW)
Die by the Sword (LoW)
Die by the Sword (LoW)
Die by the Sword (LoW)
Winter is Coming (Core)
Winter is Coming (Core)
Guilty! (Core)
Guilty! (Core)

Attachments (5)
Summer (Core)
Grey Wind (LoW)
Frozen Solid (LoW)
Crown of Winter (LoW)
Icy Catapult (TWot5K)

Plot (7)
Storm of Swords (LoW)
Take Them by Surprise (LoW)
Valar Morgulis (Core)
Family, Duty, Honor (LoW)
Respect of the Old Gods (LoW)
The Power of Arms (Core)
The Power of Arms (Core)

I would take out Family Duty Honor; its not all that useful unless you have a lot of Tully characters. I really like Battle of Oxcross when playing Stark. I would also suggest removing Take Them by Surprise. This is personal preference, but there is a popular GJ event called Ahead of the Tide that auto-wins Initiative, and you'll be hard-pressed to get back into the game if you have to discard your hand when playing Stark. Since you have no restricted cards, you could use Fear of Winter or Fury instead.