Hi maclennan25,
Yes it is a shame but, that's what happens. I haven't had much luck with burial places in my searches.
I'll have a look at the addresses you sent. Being 1930 & 1936 there might be a headstone, but I would hate you to go there and there isn't one.
Both Hugh MacKay and Rosina MacKay (McLean) were born in Kildonan - I wonder if they were buried there - that said, I have no idea where that is and how far from Kiltearn.
regards,
cupcake