Agnews State Hospital for Insanity

This is a bit tangential for a genealogy study, but I'm also working on becoming a doctor of psychology so obviously the concept of an insane asylum is interesting to me.

My g-g-grandfather John Sturzenegger was, according to a 1900 census, committed to the Agnews State Hospital for Insanity.  Here's a link to the hospital here.

Here's another link to the hospital itsself.  Given that my professional studies are in psychology, I'm interested in finding the records of John Sturzenegger.  Given that he was from Switzerland, I wonder if there was something to this at that point in regressing to a native language, or was it just dementia?

Here's the census.