Music
Rex Features
Doctor Robert Tabah confirmed that McGarrigle died at her Montreal home on Monday after losing her battle with cancer.
Tabah told The Guardian: "Kate McGariggle passed away yesterday as a result of sarcoma, a form of cancer that she was first diagnosed with three and a half years ago.
"Kate was a remarkable and warm woman, who pursued everything in life with humour and grace... I was amazed by her courage and stamina."
He added that despite being "gravely ill", McGarrigle had performed a three-and-a-half hour show with her children and other stars at the Royal Albert Hall.
Her son Rufus reportedly cancelled his Australian tour last week after his mother became "critically ill".
McGarrigle, ex-wife of Loudon Wainwright III, wrote and performed music with her sister Anna.
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