The fantasy novel "A Storm of Swords" features marriage by capture (or "stealing a woman") as the traditional form of marriage north of the Wall. The Free Folk consider it a test for a man to "steal" a wife and outwit her attempts on his life long enough for her to respect his strength and come to love him. More often, though, marriages by capture are conducted between a couple already in love, an elopement without the extra element of attempted murder. Jon Snow and Ygritte have such a marriage by capture, although at the time Jon was ignorant of the custom and thought he was merely taking her prisoner. The Ironborn are also known to practice this custom, taking secondary wives while reaving the mainland, which they refer to as "salt wives".