Hi there. Your best bet would be the Rhodesian Death Registers which are available online up until 1976 (they say 1977 but I have searched for relatives I know passed on in 1977 and they were not there). You need to know their names, or you could just search thru all of the Robertsons until you found yours. You would go to the Death Index, get the death notice ref and then hunt down the actual Death Notice. I have found a lot of info on my relativs that way - ther eis however a lot of inconsistency in the amt of info on those docs! Let me know 1 of the names and I will do an example of how to find the Death Notice (unless of course you know how to do this anyway...)