That they survived at all is quite amazing, given the discrepancy in size and strength that existed between the two, but in fact they lived to the age of 61, the oldest female conjoined twins on record. Christine, the twin on their left, was so much stronger than her sister that Millie could lift both legs off the ground and Christine could carry her about. Also, their “anterior” legs were far more developed than their “posterior” ones, to the extent that they could left the “posterior” pair off the ground and walk around on only the “anterior” set.
While on exhibition in New Orleans, Millie and Christine, still only children, were kidnapped from Brower and Smith. Their kidnapper continued to show them for almost a year, during which time they appeared at Barnum’s American Museum. In 1855 they were sold to a Professor Millar, who took them to Canada and then to Europe. While exhibiting the sisters in England, Millar managed to make contact with Joseph Smith, the twins’ former owner who had become a father figure to them during the brief time he looked after them. Smith brought Monimia, the twins’ mother, the England to collect them and return with them to the United States.
Smith and his wife, Mary, tutored the girls in music and languages, of which they learned to speak four or five. Song would become their preferred medium for the rest of their lives; Millie was a contralto and Christine a soprano, and they were celebrated for their ability to harmonize. When Smith died in 1862, the twins used their earnings to care for Mrs. Smith and also supported their mother. Though they were willed to Smith's son, Joseph Jr., the Emancipation Proclamation soon nullified his ownership of the twins.
Millie and Christine became close friends with Anna Swan and Martin Bates, Barnum’s most famous giant and giantess. They were bridesmaids at the Bates’ much-publicized wedding. They also met up with Giuseppe and Ernesto Magri, a pair of midget brothers from Italy, while touring Europe, and brought them back to the United States. In the 1880s, after a long, successful career in circuses and museums, the sisters returned to their hometown of Welches Creek, North Carolina, and purchased a small farm.
In 1909, after a fire consumed all of their possessions, the twins’ health began to decline. Millie contracted tuberculosis, which, although it never directly affected Christine, eventually claimed both their lives on October 8, 1912. Christine died seventeen hours after her sister.
Were Millie and Christine exploited? Most certainly – their descendants claim that even under the tutelage of Mr Smith, the twins were raped, beaten and overworked, the same grisly treatment suffered by other female slaves. And, until the twins were old enough to make their objections known, they were “examined” by hundreds of doctors whose motives were less than pure. Thus it was a widely-known fact that the girls shared genitalia, a not uncommon birth defect in pygopagus twins. Though it is likely that the accounts of abuse by Mr. Smith have been exaggerated by revisionist historians, the sexual exploitation by medical men is unfortunately a fate which befell nearly every female “freak” since the advent of medicine as we know it.
Throughout their lives Millie and Christine were referred to as a single person, “Millie-Christine, the Two-Headed Nightingale”, an appellation that is toxic to modern ears, since we now know that conjoined twins are always two distinct persons. Yet Millie and Christine did not object, and were even quoted as saying, “Although we speak of ourselves in the plural, we feel as but one person.”