Natalie and Kevin Mock of Sandy, Utah, announce the birth of their daughter, Vivian Sophia. She was born Feb. 24, 2010, weighing 5 pounds, 14 ounces and measuring 19 inches long. She has a sister, Lucy. Grandparents are Eldon and Ann Mock of Holbrook, Laurel and Elena Telford of Randolph, Utah, and Kay and Bill Bell of Mt. View, Wyo. Great-grandmother is Marie Christensen of St. Paul.