Interlude:
This is an update on where everything in Westeros currently stands.
Mance Rayder 'the Eloquent' is the King of the Kingdom Beyond The Wall. He is fifty four years old, and rendered incapable. His wife, Queen Dalla, has given him no children, and never will. While the Kingdom has existed since 297, I see no future in which this kingdom remains intact. It is already plagued with revolts, and the Fist of the First Men has declared its independence - the other regions may follow, and have increasing reason to do so. His heir is Kyleg 'Crowkiller'.
Denys Mallister is the Lord Commander of the Night's Watch. He has served as LC since 300, and is currently aged sixty-six. He repelled a Wildling invasion of the Night's Watch at one point. They're business as usual, I guess.
Torren Stark is Lord Paramount of the North. He has been the Lord of Winterfell since he took back his family's title from the Boltons in 303, after the Great Northern Revolt. The North was weak and fragile when he came to power aged just sixteen, but he has rebuilt it to its former glory in the years since he has reclaimed it. He is now twenty-three years old, and is married to Myrcella Lannister, who has given him three children so far: Arya, Catelyn, and Robb. He is advisor to Queen Daenerys.
Edmure Tully is Lord Paramount of the Riverlands, having occupied the position since 299. He has four children with his wife, Roslyn Frey: Hoster, Tyta, Osmeria, and Orland. He lead the Riverlands into battle against the Iron Islands in 303, killing Euron Greyjoy and winning his war. He is aged thirty eight.
Robert Arryn is Lord Paramount of The Vale, a position he has retained since 297. Aged just nineteen, he has taken Dorea Sand as his wife, and as of yet the two have no children. The only war he has been a part of, so far, is the war to depose King Tommen alongside his uncle and cousin.
Victarion Greyjoy is Lord Paramount of the Iron Islands. He became King of the Iron Islands after Euron's death in 303, but was forced to bend the knee to the Iron Throne by Joffrey Lannister in 307. He has had many wives, only one of which has given him a child: the baby died in childbirth, as did his wife. He is aged forty nine.
Lucion Lannister is Lord Paramount of the Westerlands, being granted the title by his relative Tommen Lannister when he inherited the Iron Throne in 308. He has taken Amena Folman as his wife, although they have no children. He is currently fighting off an invasion by Tyrion Lannister, who believes he is the rightful ruler of Casterly Rock. Lucion is aged thirty one.
Willas Tyrell is Lord Paramount of The Reach, inheriting the title after his father died in 309. He is married to Sarella Sand, a daughter of Oberyn Martell, and they have two children: Arysa and Elinor. Aged just seven, Arysa suffers from greyscale. He is thirty three.
Shireen Baratheon is Lady Paramount of The Stormlands, taking the title from Stannis Baratheon after he was fed to a lion by Joffrey Lannister in the year 300. Shireen has four children with Justin Massey: Edric, Humfrey, Pearse, and Bonifer. She is aged twenty two.
Doran Martell is the Prince of the Dorne, ruling since 279. He has three children with his wife, Mellario: Arianne, Quentyn, and Trystane. He is aged sixty two.
And finally, Daenerys Targaryen is Queen of the Iron Throne/Seven Kingdoms. She is unmarried as of yet and has no children, besides her dragons - Drogon, Rhaegal, and Viserion. She came to power after Tommen Lannister was killed in battle during Torren Stark's war to depose him in the year 310. She is aged twenty-seven.