A trial date has been scheduled for a Fond du Lac man accused of sexually assaulting a young girl. A five day jury trial for 53 year old Ronald Williams is scheduled to begin May 4 on charges of first degree sexual assault of a child. He was bound over for trial last summer. Before the trial another hearing is scheduled for April 27. Williams is being held in the Fond du Lac County Jail on $50,000 cash bond.