The Great Houses are the most powerful of the noble houses of the Seven Kingdoms. They exercise immense authority and power over their vassals and territories and are answerable only to the King on the Iron Throne.
Before the Targaryen Conquest, each of the Seven Kingdoms was ruled independenly by a powerful royal family. During the Conquest these families were either destroyed and replaced, or defeated and forced to swear allegiance to King Aegon, reigning from the Iron Throne in King's Landing.
The Gardeners, Hoares, and Durrendons were slain and replaced by the Tyrells, Greyjoys, and Baratheons respectively, whilst the Lannisters, Arryns, and Starks surrendered peacefully and were allowed to remain in control of their lands. In addition, Aegon raised up the Tullys to rule over the Riverlands, which had been under ironborn occupation prior to his arrival. Only House Martell of Dorne resisted his armies, but was later brought into the fold through a peaceful marriage-alliance some two centuries later.
Each Great House has a large number of vassal houses serving it, most of whom in turn have smaller vassals under them, extending all the way down to farmers and landed knights. Each Great House rules over its territory and is responsible for collecting taxes and, in times of war, raising troops to fight for the king. Otherwise they are largely left to operate autonomously to simplify the bureaucracy and governance of the realm.
Robert's Rebellion ended in the exile of the last Targaryens, with House Baratheon replacing them on the Iron Throne.
The War of the Five Kings has seen changes amongst the Great Houses. House Baratheon is divided into House Baratheon of King's Landing and House Baratheon of Dragonstone, both claiming the Iron Throne, whilst the defeat of the Starks and the Tullys has led to them to be replaced by former vassal houses Bolton and Baelish, respectively.
House Frey had hoped to be elevated as Lords Paramount of the Riverlands as a reward for their role in the Red Wedding but were snubbed by the Lannisters in favor of Petyr "Littlefinger" Baelish, who now nominally rules over the Riverlords, including the Freys. In practice, however, Petyr Baelish has all but ignored his nominal rule over the Riverlands, and has not even set foot there since being awarded the title. The Lannisters did reward the Freys with rule over the former capital of the Riverlands, House Tully's seat at Riverrun (though the holdout Tully garrison still resists the Lannisters). Thus in practice, the Freys have become the Lannisters' chief allies and enforces in the Riverlands.
The Great Houses
Current Great Houses
- House Arryn, rulers of the Vale of Arryn from the castle of the Eyrie.
- House Baratheon, the Seven Kingdoms royal house, currently divided into two main branches:
- House Bolton, rulers of the North from the castle of the Dreadfort.
- House Baelish, rulers of the Riverlands from the castle of Harrenhal.
- House Greyjoy, rulers of the Iron Islands from the castle of Pyke.
- House Lannister, rulers of the Westerlands from the castle of Casterly Rock.
- House Martell, rulers of Dorne from the castle of Sunspear.
- House Tyrell, rulers of the Reach from the castle of Highgarden.
Exiled Great Houses
- House Stark, the former rulers of the North, ruling from the now sacked castle of Winterfell, until the Red Wedding.
- House Targaryen, the former royal house, currently in exile following Robert's Rebellion.
- House Tully, the former rulers of the Riverlands, until the Red Wedding.
Extinct Great Houses
Only three Great Houses have ever gone extinct, all as a result of their defeat in the Targaryen Conquest three hundred years before the War of the Five Kings:
- House Durrendon - rulers of the Stormlands. Orys Baratheon, founder of House Baratheon, married the daughter of the last king of House Durrendon, thus there is some continuity between the two Houses.
- House Gardener - rulers of the Reach. House Tyrell claims descent from House Gardener through the female line, and House Florent is actually a cadet branch of House Gardener, with a better claim to rule based on lineage than the Tyrells. Several other Houses from the Reach also descent from House Gardener.
- House Hoare - rulers of the Iron Islands and (through conquest) the Riverlands. After their defeat, Aegon Targaryen commanded the ironborn to select a new family from among their number to rule over the rest, under the Targaryens. They selected House Greyjoy.
In the books
In the A Song of Ice and Fire novels, the term "great house" or "ruling house" is used informally. Author George R.R. Martin has said that in retrospect he should have used a formal senior rank to differentiate the ruling houses from their vassals.
Keeping in mind that Martin has said that Westeros is roughly the size of the continent of South America, the realm known as "the Seven Kingdoms" spans an area on the scale of the Roman Empire. Thus in terms of their populations and the size of the armies they can raise in wartime, each of the "Great Houses" is more comparable in scale to a real-life medieval kingship like England or France than a smaller dukedom. Provinces (in this case, constiutent regions) are in effect semi-autonomous with the local people regarding the local Great House as their rulers, and the King as perhaps an abstract and distant figure who has no bearing on their day-to-day lives.
The definition of a "Great House" in general can be summarized as any noble House that is senior enough to answer only to the King on the Iron Throne. The royal family itself rules the Crownlands directly, loosely making it another Great House, though technically it ranks higher than all the others. At the start of the books this list comprises the Starks, Lannisters, Arryns, Greyjoys, Tullys, Tyrells, Baratheons of Storm's End, and Martells. This definition sometimes leads to oddities, for example, House Hightower of Oldtown commands a vastly populous city (second only to King's Landing and not by much) and an immense area of territory around it, including numerous smaller vassal houses. The Hightowers could theoretically be more powerful than the ruling Great House of less populous regions (such as the Greyjoys and perhaps even the Martells), but as they are vassals of the Tyrells, they are not counted as a Great House.
Few Great Houses have ever gone extinct. By the time the books begin, only three former Great Houses have ever been destroyed, all during the Targaryen Conquest, three hundred years before the War of the Five Kings:
- House Durrendon - rulers of the Stormlands.
- House Gardener - rulers of the Reach.
- House Hoare - rulers of the Iron Islands and (through conquest) the Riverlands.
After the Targaryen Conquest, House Baratheon replaced the Storm Kings of House Durrendon, House Tyrell replaced House Gardener, and House Greyjoy replaced House Hoare. Orys Baratheon, founder of House Baratheon, married the daughter of the last Storm King, so there was some continuity with the former House and its replacement. House Durrendon left no other known branches besides the Baratheons. House Gardener intermarried with many of the great noble families of the Reach, and House Florent is even a cadet branch of the main Gardener line. House Tyrell descends from House Gardener through the female line (much to the consternation of the Florents), so there is some continuity in the Reach as well. Thus, by the time of Robert's Rebellion, the Reach is the only region of Westeros which has noble Houses with rival claims to rule based on descent.
House Hoare, however, was completely destroyed, when Harren Hoare and all of his sons were roasted alive by Aegon the Conqueror's dragons. Therefore, Aegon had the ironborn choose one of their own Houses to rule over them (under the overall rule of the Targaryens), and they chose House Greyjoy.
The Iron Islands are actually something of an odd case, in that for many centuries their kingship was not hereditary. When a king died, the powerful noble Houses of the Iron Islands would meet in an assembly known as a Kingsmoot to select a new king to rule over all of them. Five thousand years ago, House Greyiron killed all of the representatives at the last Kingsmoot, and ruled the Iron Islands as hereditary kings for a thousand years. The Greyirons were destroyed four thousand years ago during the Andal Invasion, when they were deposed by House Hoare. Whether the Greyirons should be considered a Great House that early in history is unclear.
House Hoare officially went extinct when Harren died, but it only went extinct in the male-line. House Volmark, an ironborn noble family from Harlaw, descends from House Hoare through the female line (much as House Tyrell descends from the officially extinct House Gardener through the female line). House Volmark never had particularly strong claim against House Greyjoy, however, due to a combination of that the ironborn are very misogynistic and don't place much value on female-line descent, and because of the unusual elected-kingship customs of the Iron Islands.
Nonetheless, no noble House from the Iron Islands can claim a better right to rule than House Grejoy based on descent: multiple houses from the Iron Islands, including House Greyjoy, possess ancestors who were kings, but during the time of the non-hereditary kingship based on elections in the kingsmoot. Moreover, the Greyjoys were at least briefly kings during the Greyjoy Rebellion, so by the time of the War of the Five Kings, they are still held in very high esteem by the ironborn. Thus the situation in the Reach is still unique, with other noble Houses besides the current Great House possessing claims to rule based on descent, and specifically House Florent actually has a better claim than House Tyrell based on descent.
In ancient times, other royal Houses included House Greyiron in the Iron Islands, House Mudd in the Riverlands (whose domain was located along the Blue Fork of the Trident), and House Casterly in the Westerlands. However, given that at that time almost every castle in Westeros commanded a kingdom and almost every lord (great or not) called himself a king, it is unclear whether or not these houses should truly be called "Great".
Great Houses of Westeros
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