Bristol Births Tripp. No, Really. She Does.

And Unto Her a Childe Is Born.

"While pregnant, Bristol often appeared with her mother as she campaigned across America during the elections.

Johnston's mother Sherry made headlines earlier this month when she was arrested and charged six felony drugs offenses.

Tripp joins a host of strange-named Palins. Alaska governor Sarah Palin's youngest son is called Trigg, and her eldest son is called Track.

The governor's office said the birth was a private family matter."