Kate & Anna McGarrigle
…They grew up in Saint-Sauveur, where they learned piano from nuns. In 1971, Kate married the singer-songwriter Loudon Wainwright III. Their children, Rufus and Martha, are also both singers. The two divorced in 1976. Kate McGarrigle died in 2010, aged 63, of sarcoma, a rare form of cancer. Anna McGarrigle…