How did Galdriel and Celeborn become the lord and lady of Lothlorien. Anything at all that includes their method of ruling and/or how they won the confidence of the indigenous people of that area. It appears they were welcomed and encouraged. But you can do something different if you feel like it. Mainly a fic that gives a feel for the time and place--late Second Age through early Third Age you chose!
Governance in Lothlorien - Galdriel and Celeborn