Apparently very littled happened in 773. More specifically, nobody was born or died this year. This despite the fact that Charlemagne crossed the Alps and invaded the Lombards -- surely not something one would think took place without any deaths!
Although, sadly enough, if you look at the births of 773 and deaths in 773 categories, you'll find that, in fact, some people were born in 773 (although apparently nobody died -- even though we got a new King in Connacht, according to the list of state leaders in 773) -- we just don't feel like telling you about them.
Clearly this is a space where some improvement could be had. And even more a space where we could use the ability to generate content from metadata instead of having to do so manually.