House Do'Urden (informal for Daermon N'a'shezbaernon) is a fictional clan of dark elves in the Forgotten Realms campaign setting, created by R.A. Salvatore.
It is one of Houses of the Underdark drow city of Menzoberranzan which first appeared in Homeland. House Do'Urden was Tenth House of Menzoberranzan at the start of the series. It was the house of the famous drow Drizzt Do'Urden.
"Do" means "walkers in", and "Urden" means "the darkness". Thus "Do'Urden" means "walkers in the darkness".
At the beginning of the book Homeland (1297 DR), on the day which Drizzt Do'Urden was born, House Do'Urden attacked House DeVir, which was Fourth House of Menzoberranzan at that time. Using the power of the birth of Drizzt Do'Urden, Malice Do'Urden was able to create a spell capable of defeating House DeVir. With this defeat House Do'Urden became Ninth House of Menzoberranzan.
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