Boyfriend of NYC mom whose 3-year-old son was dumped dead at hospital arrested in connection with earlier beating

The boyfriend of a Brooklyn mom whose 3-year-old son was dumped dead at the hospital over the weekend was charged with beating the boy last month for wetting himself, sources said.As police try to figure out how little Kyng Royal Foster died, Robert White, 38, has been busted in the earlier attack, in which the boy was hit at least 10 times in the head on Feb.22, the sources said.The beating over the peeing incident came a few weeks before the tot was dumped at University Hospital at Downstate by White and his mom, 24-year-old Sunshine Davis on Saturday.The city medical examiner has not determined Foster’s cause of death and police are still investigating.The boy was pronounced dead at the hospital, police said.According to sources, White has at least eight prior arrests dating to 2007 on robbery, assault and reckless endangerment charges....