The contender in my tree is by no means the oldest on this thread, but he did pretty well as far as living through the reigns of various monarchs. John Pearle was born in Rattlesden, Suffolk, in 1541, died in 1637, aged 96 years, and his timeline runs thus:
1541 - Birth of John Pearle, during the reign of Henry VIII.
1543 - Copernicus published his 'On the Revolution of the Celestial Spheres' in which he postulated that the Earth went round the Sun and not as had previously been supposed.
1547 - Death of Henry VIII, accession of Edward VI.
1553 - Death of Edward VI, accession of Mary Tudor (Bloody Mary).
1558 - Death of Mary Tudor, accession of Elizabeth I.
1603 - Death of Elizabeth I, accession of James I.
1625 - Death of James I, accession of Charles I.
1637 - Death of John Pearle
So during his lifetime there were six reigning monarchs and he only narrowly missed the English Civil War by about five years. I've often wondered, living as he did in a fairly remote Suffolk village, how much he knew of what was happening in the country, and in the world generally.