The Riverlands

Ruled by House Tully from the castle of Riverrun. Bastards born in the Riverlands take the surname 'Rivers'. Thr Riverlands are dominated by the mighty River Trident. The Riverlands, lying close to the centre of the continent, have been the site for battles and conflicts throughout the history of Westeros. Once an independent kingdom, they were overrun by the ironborn a century before Aegon's invasion and are thus not counted as an eighth kingdom, despite their significant size and population. The Riverlands are, as their name suggests, one of the most fertile and populous regions in Westeros, which is in many ways the only reason they have been consistently able to recover from the frequent wars that cross their borders.