Things were that casual throughout '' The Wainwright Family & Friends Christmas Show , '' where Rufus and his sister , Martha Wainwright , took over an annual event that used to be headlined by two songwriters from the previous generation : his mother , Kate McGarrigle , and her sister Anna .
Kate McGarrigle
Martha Wainwright
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Wainwright
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Rufus
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Martha Wainwright
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Kate McGarrigle
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Anna