What is the tallest mount before mount Everest?

Mount Everest was the highest mountain regardless of whether it was discovered or not. Due to tectonic movements, Mount Everest was growing since the dawn of humanity some 2-4 million years ago. Before that it is possible that Everest wasn't the highest mountain, but since there aren't any records stating height of mountains, then we could technically say that Everest has always been the highest mountain regardless of whether humans or their descendants named a higher mountain.