A Gillsville man was hospitalized for evaluation Wednesday after a tree limb fell on him in his front yard — but not before he pushed his niece out of harm’s way, relatives and friends said. Dwight Dupree, of Rolling Ridge Drive, often sat under the tree for its ample shade, said his nephew and a neighbor. “He was sitting under the tree and heard a big crack,” said Donta Ware, Dupree’s nephew who lives nearby and arrived minutes after his uncle was struck.