House Glannath was one of the noble houses of the Drow city of Olath Belanore and participated in the city’s matriarchal aristocracy. Surviving accounts from the late 87th century SE describe it as the third house of the city, indicating substantial political and economic standing within Olath Belanore’s hierarchy.
House Glannath also held enslaved people, including Deep Gnomes. The family of Abendigo escaped enslavement under the house when Abendigo was a young child. Beyond these surviving details, the house’s wider political program and later history are not presently well documented.