How EXACTLY did Charles Thomas Jackson (1805?80) die?

Just mentioning two links with differing accounts:

1) "Subsequently, Jackson, suffered what appeared to be a stroke with
paralysis and speech impairment, but the disability led caretakers to
believe he had gone mad.  He spent seven years at the McLean Asylum in
Somerville, until his death on August 28, 1880 at age 75."
http://www.anesthesia-nursing.com/ether2.html

2) "In 1873, Jackson was diagnosed as insane, possibly precipitated by
angst that he never received what he believed was his right of
priority in the ether controversy (Fenster 2001)."
http://www.redorbit.com/news/display/?id=58933

A book by J.M. Fenster (you can "search inside"):
http://www.amazon.com/Ether-Day-Greatest-Discovery-Haunted/dp/0060933178/

More on "McLean Hospital":
http://www.mclean.harvard.edu/about/history/