Blanche Dumas was born on the island of Martinique in 1860. She had a third leg attached to her sacrum, and her two primary legs were said to be imperfectly developed. The third leg was without a mobile joint. She had double genitalia as well as a duplicate bowel and bladder. To the right of her middle leg was the stump of another limb. Promoters sought to maximize its appeal by adorning it with nipples and advertising it a pair of extra breasts.