Siamese Twins, twins born in Siam, of Chinese parents, whose bodies were united by a fleshy band extended between corresponding breast-bones; were purchased from their mother and exhibited in Europe and America, realised a competency by their exhibitions, married and settled in the States; having lost by the Civil War, they came over to London and exhibited, where they died, one 2½ hours after the other (1811‒1874).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Siam * Sibbald, Sir Robert