Life expectancy has risen dramatically in the modern era, due to improvements in medicine and sanitation. In the late 20th century the average British citizen lived for 77 years. Two hundred years earlier, life expectancy at birth was 361. Much of this increase is attributable to much lower child mortality rates, but even when this is factored out, adults are still living longer. Which made me think...
I wonder whether the first human being ever to live to the age of 100 lived recently enough in history that we know his or her name?
Update: The answer is 'probably not', according to this:
Still, there is some evidence, most of it from paintings and important documents, that nonagenarians and centenarians have existed throughout much of recorded history. [...] Athanasius, Patriarch of Alexandria, reported that St. Anthony, an Egyptian monk and ascetic, died in A.D. 356 at the age of 105. Leonardo da Vinci, in his sixteenth-century Corpus of Anatomical Studies notes the autopsy of a 100-year-old man.
From here (web.archive.org link, original page 404'd).
1 Figures from here.
I think the first guy to live over 100 years was called Methuselah. He lived for ages, apparently.
Although I'm not sure that he counts as he is entirly ficticious.
Is this any help?