ORLANDO, Fla. — The grandparents of Caylee Anthony, the toddler whose death led to the year’s most high-profile murder trial, gathered with more than 100 members of the public to commemorate what would have been the child’s sixth birthday. The Orlando Sentinel reports (http://thesent.nl/peReRw ) that the crowd met Tuesday in George and Cindy Anthony’s Orlando-area neighborhood, near a wooded area where the little girl’s remains were found in December 2008. “This is the first time I’ve been here in so long,” George Anthony told reporters a few feet from where his granddaughter’s body was found.