I'm sorry, but the title of your post implying that there was any effective treatment for mental illness that he could have been given is very funny to me.

"Mental health is health. Get therapy (leeching to balance your humors) today."

And then St. Crispins day happened too.

I gotta find out what was going through the head of Manuel II Palaiologos when he visited this guy to ask for help against the Ottomans. Apparently he left a lot of records from that time.

Can you please make the title less like clickbait? Put it on YSK without the clickbait title and you'll probably get a good response