June Gale, born Doris Gilmartin (1911–1996), twin sister of Jane: wife successively of Oscar Levant and Henry Ephron
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Jean Gale, born Lenore Gilmartin (1912–1974), twin sister of Joan
Coincidentally, his second wife, June (née Gilmartin; July 6, 1911 – November 13, 1996), widow of Oscar Levant, who wed Ephron in 1978, was also one of four sisters.
Sisters of Mercy | Dorothy Gale | The Andrews Sisters | The Sisters of Mercy | Three Sisters | The Pointer Sisters | Sisters of Charity | Sisters of St. Joseph | Big Brothers Big Sisters of America | Sisters of Notre Dame de Namur | Three Sisters (play) | Sisters of Providence | Marist Sisters | Bob Gale | Boswell Sisters | Sisters | Megan Gale | Little Sisters of the Poor | Gale Norton | Franciscan Sisters | Brothers and Sisters | Zona Gale | Wyrd Sisters | Viennese Singing Sisters | The Lennon Sisters | Sisters, Servants of the Immaculate Heart of Mary | Sisters of the Immaculate Heart of Mary | Seven Sisters station | Lane Sisters | Big Brothers Big Sisters |