A Cambria County man who pled guilty to shooting and killing his grandson last April has been sentenced to prison time, according to the Cambria County District Attorney’s office. Authorities say 68-year-old John Oblinsky, of Summerhill, was sentenced Wednesday to serve 3 1/2 to 9 years in state prison. In January, Oblinsky pled guilty to voluntary manslaughter in the fatal shooting of 21-year-old Jacob Fisher at a home along Fairlane Road.