However, the North under Jon Snow had pledged to Daenerys of House Targaryen while the Iron Islands under Euron Greyjoy had allied with House Lannister. The realm has several times became fractured from years of civil warfare with the most recent resulting in the the Kingdom of the North and the Kingdom of the Iron Islands attempting secession. The realm actually consists of nine distinct regions, the remaining two being formally established after the Targaryen conquest, and thus they are not actually considered to be 'kingdoms.' Regardless, all nine provinces were subject to the rule of the Iron Throne.
The name of the realm dates back to the time prior to the War of Conquest, during which seven independent kingdoms existed on the continent. The Six Kingdoms, formerly known as the Seven Kingdoms, is the name given to the realm that controls southern Westeros and its numerous offshore islands, ruled by the King of the Andals and the First Men from the Red Keep in the city of King's Landing. Do you know what the realm is? It's the thousand blades of Aegon's enemies.' ― Petyr Baelish to Varys, referring to the Iron Throne
