From staff reports:

Ron Wallace Jr. pleaded guilty as charged to second-degree murder in the November 2010 beating death of his girlfriend’s 2-year-old daughter in Federal Way.

Wallace entered the plea Oct. 5, and is scheduled for sentencing Nov. 10 at the Regional Justice Center in Kent. Wallace, 30, faces a sentence between 144 and 244 months (12 to 20 years) in prison. Prosecutors will seek the maximum sentence, according to the county.

On Nov. 21, deputies were called to a house at 36202 21st Place South in unincorporated King County east of Federal Way. According to charging papers, Wallace called 911 because 2-year-old Purpose Goldsmith was not breathing. Wallace was at the home with the girl and her 4-year-old brother while the children’s mother was at work.

The girl was transported to Harborview Medical Center, but was dead on arrival. She had head trauma and numerous wounds on her body, including belt marks on her buttocks, stomach and face, reports said. Autopsy results indicate the girl died of blunt force injury to her head and torso.

Wallace said he punished the girl because she soiled her diaper, and according to charging papers, admitted to hitting her six or seven times with a belt. Wallace said he shook her many times and she went limp, and according to charging papers, slapped her several times with an open hand on the side of her head. Wallace, who is 5 feet 5 inches tall and weighs 200 pounds, said he used 50 percent of his strength against Purpose, according to charging papers.

Wallace was arrested Nov. 22 by King County Sheriff’s Office detectives. He has a 2005 felony second-degree assault conviction related to domestic abuse, according to charging papers. At his arraignment in December, Wallace had pleaded not guilty to the charges.