Her first grandkid. Or, if you’re an Atlantic reader, her second, the first having been born to the same woman, er, eight months ago.

Bristol Palin, the 18-year-old daughter of former Republican vice-presidential candidate Sarah Palin, gave birth on Sunday to a healthy 7 lb., 4 oz., baby boy in Palmer, Alaska.

“We think it’s wonderful,” said Colleen Jones, the sister of Bristol’s grandmother Sally Heath, who confirmed the news. “The baby is fine and Bristol is doing well. Everyone is excited.”…

Bristol Palin is currently residing in Wasilla and completing her high-school diploma through correspondence courses.

Johnston is studying to become an electrician. He told the Associated Press in October that he and fiancée Bristol plan to wed in 2009 and raise the child together.

I know there’s some Keith Olbermann special comment material buried in here somewhere, probably having to do with illegal drugs. Can’t wait! Exit question: Anyone want to try to guess the name? You’ll find it at the link up top; all I’ll say by way of a hint is that it’s very much in keeping with the ‘Cuda’s naming conventions. Feel free to use this if you need help.

Update: Commenters are wondering whether Sullivan will accuse Palin of giving birth to this one herself.