His grave is unmarked and unknown because he did not wish to be worshipped as a god (which some of his people were starting to do). He was a big believer in God, though it was not the Judeo-Christian concept of God. He believed that for a man to be worshipped as a god was blasphemous and weakened the people.
Never read that before either. I had read somewhere he had
become obsessed with immortality or death or something like
that... though I haven't read enough about him to know what's
true & what is made up for one's own stance on him.
Many of the things I read are online, as there is no
local library. The sites I found I generally decided
didn't have enough info to be worth bookmarking.