I think "remember" takes on various shades. Is name recognition the same as understanding what they did?

Most people will recognise the name Julius Caesar but few could say much more (at school I had to read his Invasion of Britain in latin so I know a little - utterly failed the subject)

Ask someone about Aristotle and 99% will have no clue. A Greek maybe.

I would say that outside of people associated with a religion, only names will sometimes live on.