House Baelish

House Baelish of Harrenhal is one of the Minor Houses of the Seven Kingdoms. Their seat is Harrenhal, though another small branch exists on The Fingers in the Vale. Their sigil are mockingbirds on a field green. Their official Motto is "Knowledge is Power." The words were officially recognized as Petyr Baelish, the ruling lord of the Eyrie and Warden of the East during the time of the The Reign of the Usurper, ascended to Lord Paramouncy over the Riverlands following Aegon Targaryen's ascension to the Iron Throne, though were overthrown in 470 AL.

History
House Baelish is assumed to descend from Andal adventurers, and were a Noble House of the Vale come the Reign of the Usurper. Petyr Baelish, the Master of Coin to the throne, aided the Usurper Joffrey Baratheon by helping him with his false claim to the throne, betraying Robert Baratheon's former Hand of The King, Lord Eddard Stark.

Joffrey Baratheon then gave Petyr Harrenhal and all of it's attended lands and incomes until his family bit the dust. Petyr soon married lady Lysa Tully of the Eyrie soon afterwards, putting a wrench between him and Harrenhal. Though as the War of the Five Kings came to a close, and Petyr rose the Vale for Daenerys Targaryen's claim, realizing that the war was over when Stannis' host was defeated at the Trident, Petyr was given a pardon by Daenerys for his services to her after helping her with several minor battles (of which, close to none are noteworthy) and was raised to Lord Paramounts of the Riverlands following Daenerys' coronation.

The Baelish's have since ruled in the Riverlands, switching seats several times over the course of history, though were overthrown after several corrupt leaders in House Baelish appeared. They were overthrown by the then second richest power in the Riverlands, House Tully.

The Second Dance of the Dragons
House Baelish participated minorly in the Dance of the Dragons, aiding King Aemon Targaryen with several small battles.