Found this on a website listing deaths in
the Melbourne, Australia hospital (1867-1880),
as printed by the Melbourne Argus newspaper:
Edward Keyburn, aged 35, native of Ireland;
arrived in 1855, by the General Wyndham
[ship]; died November 6 [1875], of
aneurism of thoracic aorta.
The address of this site is:
http://home.coffeeonline.com.au/~tfoen/meldeath.html