He highlighted three main reasons for choosing UNC.
"They have one of the best coaching staffs -- they've coached in the NFL," he said. "The second reason was the academics - a degree from North Carolina is like a degree from Harvard. I can go anywhere with that.
"Thirdly, they sold everything like I wanted to hear. Everything I needed to hear and everything I wanted to hear, they said it.
Williams has posted 40 tackles and two interceptions this season at safety, running one back 74 yards for a touchdown, plus one sack and two tackles for a loss.
"North Carolina told me the biggest thing they needed was a corner - a physical corner, a corner that likes to hit and can handle run support, not just cover," he said. "They said I'll play boundary corner or safety."
Williams said he also had offers from Clemson, Ole Miss and Arkansas. His primary recruiter at UNC was Sam Pittman, who he said started recruiting him a month ago. He will take an official visit to Chapel Hill on Nov. 24.
"I've been to a basketball game before, but I've never been to a football team," he said. "I'm looking forward to seeing the atmosphere with football."
When asked if he will visit any other schools, Williams responded: "I'm not going anywhere else, I'm a Tar Heel."
He was voted 1st Team All-Conference as a freshman at Coffeyville, earning JuCo All-America honors and totaled 1,251 yards on 136 attempts and 16 touchdowns.
As a sophomore this year at Coffeyville he's posted 1,008 yards on 173 carries and with 10 touchdowns.
He earned national JuCo National Player of the Week honors on Sept. 22 for a performance that included 366 all-purpose yards and 224 rushing yards on 14 carries.
At Kashmere High School in Houston, Guillory was named All-District MVP his senior season.