I read this post discussing wives who don’t take their husband’s last name.  Here is the comment I left at the site.

“My wife (Gina Alsdorf) didn't take my last name when we got married. I'm fine with that; it seems to me that your name is one of the most personal things you possess; it is only right that an individual should be able to decide their own name, married or not.

“Having said that, she will sometimes use the name "Gina Williams", because it can make paperwork and communications go easier, especially for some business transactions. Make of that what you will.

“The real question for us is the kid - she arrives in January, and we know her first name ("Lucy"), but one of these days we'll have to sit down and hash out the issue of Lucy's last name...

“(Actually, I think Gina's leaning toward giving Lucy my last name; ten points if you can figure out why. Hint: Gina is a lawyer...) “