A stunning new Us Weekly magazine expose has revealed Britney Spears' grandmother killed herself after failing to recover from the death of her daughter. The U.S. magazine has unearthed a terrible Spears family secret, claiming the mother of Britney's father Jamie shot herself at her daughter's grave years before the pop superstar was born. The magazine's Jill Martin reveals, "Britney's paternal grandmother actually suffered from depression; she had lost her three-day-old baby and actually shot herself to death at the child's graveside." Britney's father was just a child when the tragedy took place.