Are you changing your name? Don't think we're only talking about the wife - some states allow men to adopt their wife's last name, and some states permit civil union partners to change their names. Federal agencies generally don't recognize name changes for men after marriage which means the man would need to go through a legal name change authorized by a court.
The question of what a surviving spouse inherits from a deceased spouse is a complicated one. The answer is the typical lawyer's response, "It depends." Some scenarios can help to illustrate the issues. To keep the examples simple, I am going to assume that the husband dies before the wife - forgive me, all you husbands out there.
So you're getting married? Did you invite the IRS to the wedding? On the list of things to do from hiring the hall, choosing the caterer, and mailing the invitations, don't forget a visit to your tax advisor.
In Pennsylvania, you can disinherit your children, but you can't disinherit your spouse. In fact, in all but one of the fifty states, you cannot disinherit a spouse. In Georgia it is permitted.