Nessa was one of the Valier, the sister of Oromë and spouse of Tulkas.

She loved light-footed animals, especially deer which follow her when she ventured through the wild. She can outrun any of them, as swift as a speeding arrow.

Nessa delighted in dancing and it is said that during the feast of the Spring of Arda when Tulkas married her, she danced upon the never-fading grass of Almaren in the company of the Valar.
Encyclopedia entry originally written by Arien