Gavin Watterson welcomes his 6 pound 13 ounce baby sister, Ava Grace home. Ava was born on October 10. Parents are Andrea and Ryan Watterson of La Vista, Neb. Grandparents are Tom and Teresa Schaefer of Boone and Bev Curry of Omaha, Neb. Great grandparent is Blanche Halupnick of Traer.