[huhtenberg]

There was a study that showed that a vast majority of (famous) mathematicians did most and best of their work before getting married. Not that it is indicative of how things are in 21st century, but still an interesting anecdote.

[btilly]

I'd be curious about what fraction of them did that work before they got tenure.

Also "famous mathematician" is a bit of an oxymoron. All fame is local, and fame in mathematics even more so.