The Plot
Harry gets sent to meet up with Daenerys when he is 13 to be taught the way of the Dragons with a note saying that Dany’s niece is still alive & combined, they have the rights to the Iron Throne so when he turns 17-18 (hopefully in 4 years’ time), they shall wed & take back the Throne as an unit, along with Dany who Harry marries as well to allow her to reign as well after her first husband dies except her son is saved by Harry as he teleports to Dany as she just is about to fall so catches her.
Except things don’t happen that way as with news of Jon Arryn’s death, they send him away slightly earlier with his kitten & the dragon eggs that Kane found at Winterfall 3; one red with silvery brown spirals, second Ice blue with swirls of twilit navy, the final Dark grey with silver rivers, then the rest of the story happens with Kane managing to rescue Ned, Viserys doesn’t die as well as Harry convinces him that after some research, Harry, Rose & Kane might be able to remove the curse on Valyria so he can reign there as Sovereign Prince as he does marry Arianne Martell to also add that connection to Dorne. Harry adds his dragon eggs to the pyre and joins Dany into the flames, he calls the red dragon Godric with the blue one going to Jon that was called Lyandra.
Aegon & his descendants shall take the reign of Dorne as the rest of the Martell’s decide that he is younger leading the nations united by the shared blood as the new Valyria is ruled by Viserys & his descendants while Jon Snowclaw & his descendants all ambassadors between the North, the Iron Throne & Dorne as Robert does become King of the North as Ned didn’t want that role.
Jaemerys aka James is the firstborn of Harry & Rhaenys while Lilyana aka Lily is Dany’s & Harry’s firstborn born 4-5 months later.