Great new website I found: The Human Marvels: Presenting Peculiar People
MILLIE-CHRISTINE - The Two-Headed Nightingale
Millie and Christine were born into slavery on July 11, 1851 in the town of Welches Creek, North Carolina. The girls were joined at the spine and their owner, a blacksmith named Jabez McKay, was not sure what to do with the girls. Their parents, Monimia and Jacob, had previously sired seven children but clearly the twins would be of little use to McKay due to their bizarre appearance and sickly constitution. Eventually McKay opted to sell the eight-month-old girls and their mother to Carolinian showman John Pervis for $1000.
Pervis began exhibiting Millie and Christine immediately but within four years the girls were sold to showmen Joseph Pearson Smith and Brower and then kidnapped. The kidnappers exhibited the twins privately, mostly to members of the medical community, for over three years while Smith and Brower frantically searched for their investment. They eventually located Millie and Christine while they were on exhibit in Birmingham, England. The law became involved in the situation and, as slavery was illegal in England, the girls were released into the custody of their mother. She, however, had no idea how to proceed with the girls in a foreign country and as a result she gave custody and ‘ownership’ back to Smith. More here