News Sarah Palin to be a Grandmother for a Second Time By Raphael Chestang 3:10 PM PDT, July 20, 2011 Getty Images The Palin clan will soon have to make one more spot at the family dinner table. Gawker.com reports that Sarah Palin's oldest child Track, 22, is expecting a baby with wife Britta. The high school sweethearts wasted no time in starting a family, having just married two months ago. This will be Sarah's second grandchild. Her daughter Bristol, 20, gave birth to Tripp Johnston in 2008.