Nn was the daughter of Gautier de Gerbéviller but her mother is unknown. The date and place of her birth have not been found.
She had two marriages/partners. Her first husband was Pierre de Montreuil. They were married, but the date and place have not been found. They had no known children.
Her second husband was Walter von Bliesbrücken. They were married, but the date and place have not been found. Their two known children were Bruno I (c1120-c1155) and Théodoric (?-?).