John and his wife, Margaret, have been married for more than 30 years and have four children, ages 17 through 25. They all live and work in the Edison Park community in the city of Chicago. John has operated a general law practice in the neighborhood for 25 years and Margaret works as an administrative assistant for a local school.
John was born in Chicago in 1959 to Mary and Tom Mulroe, both now deceased. Tom Sr. immigrated from Ireland in the 1949; Mary's parents also immigrated from Ireland. Mary and Tom raised 5 sons on the west side of Chicago, moved to Jefferson Park in the late 1970s, and lived their retirement years in Edison Park.
Margaret (Miller) is also a native of Chicago, having been raised on the northwest side and in Park Ridge. She is one of twelve children.