Thordis was the daughter of Thorgrim 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 Audun Björnsson Skakul. They were married, but the date and place have not been found. Their only known child was Tora (?-?).
Her second husband was Onund Ofeigsson. They were married, but the date and place have not been found. They had no known children.