Wainwright's first marriage, to the singer-songwriter Kate McGarrigle, ended in divorce. During their marriage, they had two children, Rufus and Martha. Rufus was the inspiration behind two of Wainwright's songs: "Rufus Is a Tit Man" (referring to Rufus during breastfeeding) and "A Father and a Son," a retrospective. Wainwright's songs inspired by Martha are "Pretty Little Martha" (composed about her as an infant), "Five Years Old" (about missing her fifth birthday), the confessional "Hitting You," duet "Father/Daughter Dialogue" and comedy number, "I'd Rather Be Lonely."