Mary and Alex Martinez of Hilton Head Island announce the birth of a daughter, Ava Grey Martinez, at 11:38 p.m. Sept. 24 at Hilton Head Hospital. The newborn weighed 5 pounds, 4 ounces, and measured 18.5 inches. She has a brother, Landon, 6. Maternal grandparents are Teresa and Al Tutas of Bluffton and the late James Gregory. Paternal grandparents are Gregoria Martinez of Indianapolis, Ind., and the late Juan Martinez.