Kelly and Tom Richardson of Hilton Head Island announce the birth of a daughter, Abigail Montgomery Richardson, at 12:09 a.m. at Hilton Head Hospital. The newborn weighed 6 pounds, 4 ounces, and measured 19 inches. She has a brother, Will, 5, and two sisters, Hayley, 6, and Sara, 2. Maternal grandfather is Rich Hodsdon of Hilton Head. Paternal grandparents are Joan and Tom Richardson of Centreville, Va.