Today is the official Ada Lovelace day. Sadly, my kids didn't get the day off of school. ;)
She's famous for being the only legitimate child of Lord Byron, for being the first computer programmer, and for being the Queen of Steampunk.
Charles Babbage invented the Analytic Engine back in Victorian England, basically an analog computer, and Augusta Ada King, Countess of Lovelace wrote the programs. Now, this was all theoretical, because the computer didn't get built, but oh the possibilities.
She's a really nice tie in to Steampunk for me, because I've studied Byron with such love and devotion. I still think the best sort of hero is the Byronic kind.
You can read more about her at Finding Ada, if you're so inclined.