An epic Stark what if

[Lord of Farland]

In 274 A,C Rickard Stark wed his second wife a Blackwood. In 275 Alysanne Stark born, then in 277 Alarra Stark is born the in 279 Rodrick  Stark. 

Robert Rebellion happens as it did in our timeline.

Later on Alysanne is wedded to Sir Wylas Manderly in 292 A.C then in 294 A.C to Sir Andar Royce. In 294 Rodrick tells his Lord Brother. 'Ned next year I'll be a man grown. I want to sail east all I ask is that you fund the construction of a fleet of ten ships in White Harbour, heir a crew and fill it with Norther furs, woods, wool and other such things. Next Year 295 A.C He sails East its a four year trip not a tow year one to Asshai as it is as much pleasure as business. Rodrick takes his bastard nephew Jon Snow as a Squier. They have many adventurers in the East selling there Northern goods in Yi Ti ans Asshia. As the goods are so rare Osric has amassed so much, gold, gems, jade and spices that he cant fit it in his ten galleys and buys a hundred Yi Tish Junks to carry the treasury.  To Guard the buried treasure he hires ten thousand man a hundred per ship. He pulls this of because he hired Yi Tish interpreters in Slavers Bay. 

Back in Westeros the Royces attanded the Hands Tourny as they did in our timeline and Ned talks with Alarra in private she offers to take her nieces to Lys and is smart enough to sell it to Sansa and Arya as a temporary visit with the lie that the Sansa is still berthoed to Joffery. The plan is Alarra will tell them the truth out to sea.

Rodrick reaches Lys there he learns of his brothers death and his nephews crowning as King In the North and King of Trident.  As Ned funded the exhibition the wealth is his and now with his death its Robbs. Rodrick heirs sell sails including Saldor Saan as this very early in a Clash Of Kings Stannis dose not have him  yet, bring the fleet to four three hundred and heirs 20 000 thousand sell swords including the Golden Company. A few days before chapter seven of a Clash Of Kings a Raven arrives at Riverrun from White Harbour with news of Uncle Rodrciks return with Jon Snow 30 000 troops. When Robb gets the message he says he will never sue for peace. The Stark's are now richer than the Lannister's and there are 30 000 sell swords ten thousand from Yi Ti and 20 000 from the disputed lands marching south to join King Robb before Theon even leaves Riverrun. What next.

[Loose Bolt]

Usually diseases has killed more soldiers than weapons and so most men in that new Stark army will die by some very horrible ways.

After all in SoIaF ultimate god is all mighty author/creator and He would not allow easy victory for Starks. But mr Martin would make sure that Starks would suffer.