Did you ever wonder where the name Siamese Twins came from? Chang and Eng Bunker were conjoined twins born in Siam and their condition and place of birth became the name for this phenomenon. They were joined at the sternum by a small piece of cartilage and their livers were fused.
The two became American citizens and owned a plantation and slaves. In 1843, they married two sisters: Chang to Adelaide Yates and Eng to Sarah Anne Yates. Chang and his wife had ten children; Eng and his wife had twelve.
They eventually set up two separate households in White Plains, North Carolina and would alternate spending three days at each home. The twins died on the same day in 1874.