Raynasa Rethan is a Dunmer nightblade who lives in Rethan Manor after the Hlaalu Stronghold. Although she is the owner of the stronghold, she is not a member of House Hlaalu. If the Nerevarine is a member of the two other houses, they will be instructed to kill her.
(House Telvanni quest)
Having been named as a Master of House Telvanni by recruiting Fast Eddie as their Mouth, the Nerevarine will receive a new quest from Master Aryon once they have built the first phase of their stronghold, Tel Uvirith.