House Arryn

House Arryn of the Eyrie is one of the Great Houses of Westeros, and is the principal noble house in the Vale of Arryn. Their main seat is the Eyrie, which is considered impregnable. House Arryn has at least one other holding, their winter castle at the Gates of the Moon, which was once their main seat. Both of these fortifications sit astride the Giant's Lance, the tallest mountain in the Vale, the Gates of the Moon at its foot, the Eyrie at its top.

The Arryn sigil is a sky-blue falcon soaring upwards, outlined against a white moon on a sky-blue field, and their words are "As High as Honor".

History
The Arryns are considered to come from the oldest and purest line of Andal nobility, which they say reaches back to Andalos and possibly Hugor of the Hill.

When King Robar II Royce began to unite the First Men and defeat some of the petty Andal kings during the Andal invasion, the Andals of the Vale united behind Ser Artys Arryn, the Falcon Knight, a native Valeman esteemed amongst his peers as the finest warrior of his day. Robar was slain in the Battle of the Seven Stars, possibly by Artys, and the First Men houses who remained bent the knee and swore fealty to Artys Arryn, the First of His Name, new-crowned King of Mountain and Vale. From that day, the Vale became known as the Vale of Arryn. Songs of the Vale conflate Artys with the legendary Winged Knight, who is said to have slain the Griffin King atop the Giant's Lance. The First Men who did not accept Artys as their king were forced into the Mountains of the Moon, becoming the Vale mountain clans.

The Arryns initially lived at the Gates of the Moon, but over generations they constructed the Eyrie. They often used the Eyrie as a summer pleasure palace, descending to the Gates of the Moon before winter made the Eyrie inaccessible.

The Arryn kings added Pebble, the Paps, and the Witch Isle to their realm. They battled with the Stark Kings of Winter over the Three Sisters in the War Across the Water, which featured King Osgood Arryn and his son and successor, Oswin the Talon, who burned the Wolf's Den. There were bloody battles wherein the Arryn fleet turned back slavers from Volantis, ironborn reavers, and pirates from the Stepstones and the Basilisk Isles. The legendary Lady Alyssa Arryn gave her name to Alyssa's Tears, a waterfall on the Giant's Lance, when she did not shed a tear for her murdered husband, brothers and children.