TIL that in 1453, Henry VI fell into an 18-month long catatonic stupor. Likely triggered by the news of a military defeat, Henry was unable to speak or move, and even failed to respond respond to the birth of his son. His illness was likely inherited from his maternal grandfather, Charles VI.
https://en.wikipedia.org/wiki/Henry_VI_of_England
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1rmrs58/til_that_in_1453_henry_vi_fell_into_an_18month/