cause of death started to be added late 19th century - you will need to buy a death cert however from General Registry - however the stated cause not always that helpful. There might well be more in the papers (I leave that research to you - the digitised papers should be online sometime this year via the iMuseum website) - the info I gave was mostly from the card index to BMD's in Manx Sun which index only goes upto to late 1860's