I finished my playthrough as Jon Snow in the AFFC bookmark:
King of the Seven Kingdoms: Jon Targaryen, known as "the Just"
Queen of the Seven Kingdoms: Arya Stark
Crown Prince of the Seven Kingdoms: Rhaegar Targaryen, married to his sister, Lyanna Targaryen. Aemon and Visenya are their other siblings.
Lord Paramount of the North: Morgan Stark, grandchild of Brandon Stark the Holy and Meera Reed.
Lord Paramount of the Riverlands: None. When Morya Tully, the daughter of Edmure and Roslin, matrilineally married Rickon Stark, a crisis erupted that resulted in a war; Rickon had to kill his own brother Brandon on the battlefield, but in the end the North annexed the Riverlands, restoring the borders of Robb Stark's kingdom. Jon could do nothing about it.
Lord Paramount of the Vale: Robert Arryn, known as "the Bold". Yes, it's
that Robert Arryn. He married Sansa when I branded her husband Littlefinger a traitor to the Crown, arrested him and sent him to the Wall. Where he became Lord Commander soon afterwards, succeeding Tyrion Lannister - who was sent there by Tommen, became Lord Commander after Bowen Marsh, and then literally drank himself to death, but not before driving back the Others.
Lord Paramount of the Westerlands: Melwyn Lannister, known as "the Spider"; he's a Lannister of Lannisport, the main line is pretty much extinct - Tyrion and Jaime were sent to the Wall, and Cersei was boiled alive by Euron Crow's Eye.
Lord Paramount of the Reach: Hosman Tyrell, son of Willas.
Lady Paramount of the Stormlands: Melicent Baratheon, daughter of Shireen and Edric Storm. Strong, ruthless, arbitrary, a real piece of work.
Lady Paramount of Dorne: Arianne Martell.
Lord Paramount of the Iron Islands: Werlag Botley; the Greyjoys are extinct.
Family drama: Prince Rhaegar Targaryen and his sister Lyanna are married, but Lyanna is having an affair with her
other brother, Aemon.
Fuck this shit: Some random Velaryon has tamed Drogon's own puppy, and has declared war on me. Oh well, time to quit this game. How do you even get dragon eggs and/or tame dragons?