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In page Joanna Hiffernan:

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Little is known of Hiffernan after 1880. A woman reported to Juliette Courbet (1831–1915), the sister of Gustave Courbet, in a letter of 18 December 1882, that "the beautiful Irish girl" was in Nice, where she sold antiques and some pictures by Courbet. It is said that Hiffernan married a man named Abbot some time after 1881, possibly on the Continent,[2] but this may be a misunderstanding due to Hiffernan's calling herself 'Mrs. Abbot' while selling Whistler's paintings to art dealers to raise funds during their relationship. Joanna died 3 July 1886, at 2 Millman Street, Holborn. The most likely cause of death was respiratory failure.[citation needed]