TIL that the first recorded separation of conjoined twins took place in the Byzantine Empire in the 900s. One of the twins was already dead, and the other lived for three days after separation. The next recorded separation is several centuries later, in 1689, by Johannes Fatio.

https://en.wikipedia.org/wiki/Conjoined_twins#Separation
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1ghh263/til_that_the_first_recorded_separation_of/