>Those records show that child mortality remained high. But if a man got to the age of 21 and didn’t die by accident, violence or poison, he could be expected t

>Those records show that child mortality remained high. But if a man got to the age of 21 and didn’t die by accident, violence or poison, he could be expected to live almost as long as men today: from 1200 to 1745, 21-year-olds would reach an average age of anywhere between 62 and 70 years If you dig further you can see that these numbers are about male aristocracy in England between 1200 and 1745: https://books.google.co.uk/books?id=jIMHCAAAQBAJ&pg=PA8&lpg=PA8&dq=guy+sharpe%27s+peerage&source=bl&ots=tZwob0HISg&sig=rQtW27BM_bBF0xgeme2kkBYhMmw&hl=en&sa=X&ved=0ahUKEwin3JHb9uTbAhXCqFkKHcRlDqUQ6AEIZjAQ#v=onepage&q=guy%20sharpe's%20peerage&f=fals https://books.google.co.uk/books?id=jIMHCAAAQBAJ&pg=PA8&lpg=... The vast majority of people didn't witness their 70th birthday before modern times.