Dubourg was born in Paris and trained with Fanny Chéron, copying old masters such as Willem Kalf in the Louvre. There she met the painter Henri Fantin-Latour, whom she married in 1876. She collaborated with him on floral paintings, but also produced works under her own name that she signed "V Dubourg". Her painting A Basket of Flowers was included in the 1905 book Women Painters of the World.
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