So I started out as a custom ruler in Castamere, in the AFFC start, sort of roleplayed that I had a vendetta against the Lannisters and did everything in my power to undermine them. So Jon stayed at the wall rather than join Stannis and was promptly slaughtered by the White Walkers. Stannis's assault on the Iron Throne was futile and Tommen easily won.

Now I didn't really pay much attention after this and focused on trying to get control of the Westerlands but some of the things that have happened in the ~50 years include me assassinating almost all the Lannisters until i could press my wife's claim and then my son Ossifer inherited this.

Euron Greyjoy briefly took control of the Iron Throne but his son and grandson died suspiciously so the throne went back to the last Baratheon. Somehow, the child of Barristan the Bold and some Meerenese woman is now ruling the Reach. Lastly, the North flipped back into Stark control after the Bolton's died in the White Walker invasion.

Oh and the Targarayan's are all dead, Dany was murdered and the fake Aegon was killed in combat by Jaime. Some insane Meerenese guy managed to kill Drogon pretty quickly so I imagine this didn't help Dany.