A Bellefontaine man was sentenced this week to 11 years in prison for killing his young son in 2007. 54-year-old Michael Robinson had been sentenced to 14 years in prison for beating 9-year-old Dana Robinson. The child then died in 2015 and new murder charges were filed. But problems with paperwork and files forced prosecutors to offer him a plea bargain on an involuntary manslaughter charge.