Accompanied by his parents, Williamson arrived on campus on Friday night after helping Durham (N.C.) Jordan's basketball team defeat Chapel Hill (N.C.) East. The 6-foot-2, 210-pound linebacker concluded his stay late Sunday morning.
Fellow linebacker Norkeithus Otis was Williamson's host for the weekend.
"He's a real cool guy," Williamson said. "He showed me around the campus and what life is like."
Otis and Williamson spent a lot of time among a group of UNC players and fellow official visitors. In particular, Williamson made sure to reach out to one of the newest verbal commitments, Clint Heaven.
"I welcomed him to the family," Williamson said. "We exchanged numbers. It was good just building that bond."
Williamson also doubled as a recruiter of James Summers, who was officially visiting UNC despite his commitment to NC State.
"We played against each other in seven-on-seven tournaments," Williamson said. "So we already knew each other.
"I know he had a good time. We'll just have to see what happens with him."
When he wasn't with UNC players or fellow recruits, Williamson was spending time with the Tar Heels coaching staff, especially Dave Duggan, UNC's linebackers coach.
"Our relationship is coming along," Williamson said. "I call him every other day to see what he's doing and what's happening. So the relationship is going really good.
"On the visit, he showed me the defense a little bit and what he wants me to do. He showed me the position that I'll be playing in, [weak-side linebacker], and most of the stuff that I'm going to be doing."
Williamson closed out the visit by meeting with Larry Fedora.
"He was asking how I liked [the visit] and how my parents liked it," Williamson said. "We said it was a good weekend.
"He likes to joke around a lot, so he joked around a lot with me. Other than that, we just talked about winning football games."