Question: Which child of writer Loudon Snowden Wainwright Jr spent time performing in Greenwich Village? 
Sentence (from "Loudon Wainwright Jr."): He was the father of folk singer Loudon Wainwright III and singer Sloan Wainwright, and grandfather to Rufus Wainwright, Martha Wainwright, and Lucy Wainwright Roche.
Relevant evidence: Yes