“Demise” does not always mean death. This court record from early 19th century Bourbon County, Kentucky, states:
in the year 1811 John Goodlittle on demise of James Tinsley exhibited…
It does not, does not, mean that James Tinsley met his demise in 1811. It means that John Goodlittle had a lease to real estate owned by James Tinsley.
Always make certain you are interpreting words in legal documents in their legal context.