Alaska Gov. Sarah Palin is a grandmother. The baby's name is Tripp, and he was born early Sunday morning, People magazine is reporting.
But the governor's office, which issued a news release when Palin herself gave birth to her youngest son, Trig, in April, did not return messages Monday. Palin's father, Chuck Heath, declined to comment Monday, referring questions about the baby to the governor and her husband.
According to People, Palin's daughter, Bristol, the baby weighed 7 pounds, 4 ounces.
The full name: Tripp Easton Mitchell Johnston.
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The baby's father is Levi Johnston of Wasilla. News of Bristol's pregnancy broke across the country after Sen. John McCain chose Palin as his running mate in the 2008 presidential election. Johnston soon joined the Palin family on the campaign trail and the governor and her husband, Todd, said the couple would marry.
Both Johnston and Bristol Palin are 18.