Loudon Wainwright III is related to which American independent folk singer?
Loudon Wainwright III:  He is the father of musicians Rufus Wainwright, Martha Wainwright, and Lucy Wainwright Roche; brother of Sloan Wainwright; and former husband of the late folksinger Kate McGarrigle. Sloan Wainwright:  Her musical style consists of a combination of folk, rock, jazz, and blues, an approach which owes itself to her time writing and performing throughout Greenwich Village.
i don't know