Authorities say Haughton grew up in north suburban Northbrook and Wheeling, and after serving in the Marines, he reportedly came back to the Chicago area to work.
Sunday, police say Haughton killed three women and wounded four others before turning the gun on himself at a spa outside Milwaukee. Four of the victims remained hospitalized Monday.
More details about the spa shooting were expected to be made public Monday, including the names of the three victims who were killed. Haughton's estranged wife, Zina Haughton, who worked at the spa, is expect to be among those named.
Witnesses say Zina Haughton's daughter, Yasmeen Daniel, also worked at the spa and witnessed the shooting.
"She had said her stepfather was in there trying to shoot as many people as he could," said witness Sallie Konruff.
Court documents indicate Radcliffe Haughton had threatened to throw acid on his wife's face and terrorized her, "Every waking moment." Earlier in October, he was arrested for slashing her tires. She had just obtained a restraining order against him last Thursday.
A neighbor to Radcliffe Haughton in the Chicago area told ABC7 Chicago that Haughton sold cars for a suburban car dealership. Before moving to Wisconsin, Haughton reportedly stopped often by his parents' Wheeling home, where he was remembered as a nice guy.
It's been a few years since the Haughton family lived in Wheeling, but their former next door neighbor Richard Foster says he will never forget the family he calls great neighbors.
Foster remembers the son, Radcliffe, as a quiet well-mannered person.
"He taught my son how to play chess, we had block parties together and barbeques together," Foster said.
Foster says the Haughtons were Jamaican and he specifically recalls Radcliffe Haughton playing cricket matches in a big empty lot next to their home.
Sunday's tragedy comes as a shock to Foster. He says he never would have thought Haughton would be a suspect in a mass shooting.
"Everything we knew about out the norm but things change over the years," he said.
According to Haughton's Facebook page, he is a 1985 graduate of Wheeling High School. Foster said after working at a suburban car dealership, Haughton and his wife moved up to Milwaukee with their daughter.
While a domestic abuse temporary restraining order was issued against Haughton a few days ago, his father says he never expected anything like this to happen.
Radcliff Haughton Sr. said over the phone from Florida that knew about the court order against his son, however he would not answer any questions about it.
"I want to apologize to the people of Milwaukee who have been hurt, to all of those who are going through this traumatic experience," Haughton, Sr. said.
While Haughton, Sr. called his son a good guy, it's being reported that court records in Wisconsin and Cook County paint a different picture.
According to the Chicago Tribune, Haughton was charged with battery multiple times, but he was either found not guilty or charges were dismissed.