Born in Detroit, Michigan, Duggan received a Bachelor of Science degree from Xavier University in 1955 and a Juris Doctor from the University of Detroit Mercy School of Law in 1958.
He was a judge on the Wayne County Circuit Court, Michigan from 1977 to 1986.
[1] Duggan was nominated by President Ronald Reagan on September 11, 1986, to the United States District Court for the Eastern District of Michigan, to a new seat created by 98 Stat.
[1] He took inactive senior status on September 30, 2015, meaning that while he formally remained a federal judge, he no longer heard cases or participated in the business of the court.
Colosimo was assistant to Edward H. McNamara during his time as mayor of Livonia, Michigan, afterwards running for the office herself in 1987, becoming the first woman to do so.