The data shown below proves the original Mandela Effect. It shows people searching for his death before he had died. There are not a lot of searches, but there are a consistent amount to prove the effect. Also, one hundred percent of the interest is in South Africa, which is where Nelson Mandela is from.
The next querie is very strange. It shows people searching for the Nelson Mandela Effect before it was a relevant topic because he was not dead yet. There are not really any significant number of searches for it, but it still proves the point.