[CobrastanJorji]

This is a very cool query tool that I haven't seen before, thanks! (Also the syntax drives me a little batty).

I tried modifying it to give me authors whose first publication (any publication at all) happened after 60 years old, but also who had at least one wdt:P800 work. I got people like Cato the Elder, Josephus, and William of Tyre.

I tried again for only people born in the 20th century, and I got some results (plus quite a bit of wrong answers, presumably something about the query or data)! Oddly quite a few of the results are from criminals who wrote an autobiography after their release, including Henri Charrière and the infamous Nazi, Albert Speer.