JSTOR is a digital library of academic journals, books, and primary sources. According to a Twitter friend Finding Folk (@maki_ellen) journals often post obituaries of members.
With a personal JSTOR account, you can read 6 articles per month for free. I joined and then searched using the term "obituary" to see what I could find.
Here's an example from Journal of the Royal Society of Arts, Vol. 96, No. 4756 (NOVEMBER 21st, 1947), p. 22 (1 page) - the obituary of Sir Alexander MacCormick born in Scotland 1856.