Did King George III of England really go insane?

Yes, King George III really went insane.

The English king (1738-1820) probably suffered from an inherited blood disorder called porphyria, which affects the nervous system.

In 1788, he became violently insane and had to be put in a straitjacket.

He recovered but eventually suffered a relapse.

After 1811, his son, the future George IV, served as regent.