Brookfield police say 45-year-old Radcliffe Franklin Haughton damaged his wife's tires on Oct. 4.
She sought court protection four days later, and a judge granted a four-year restraining order on Thursday.
Authorities say Haughton took a cab to his wife's workplace Sunday morning and opened fire. He later killed himself.
Police declined to speculate on a motive during an evening news conference.
All seven victims were women, and the four survivors were between the ages of 22 and 40. Police haven't said whether the wife was among the victims.
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