An Oskaloosa man has been accused of assaulting a child.  Oskaloosa Police and the Iowa Division of Criminal Investigation’s major crimes unit arrested 35-year-old Richard Samuel Grylls Wednesday at his home.  He’s been charged with one count of assault and one count of child endangerment causing injury to an infant who isn’t a relative.  Oskaloosa Police began investigating the case on October 16, when a ten-month-old was brought to Mahaska Health with multiple injuries.  The infant is expected to make a full recovery.  Grylls is being held without bond in the Mahaska County Jail.