Background
O'Connell was born in Butler, Wisconsin.
O'Connell was born in Butler, Wisconsin.
He graduated from the Arizona State College before receiving a law degree from Marquette University Law School in 1952.
In 1968, O'Connell was elected to the Milwaukee County Circuit Court and served as a circuit judge until his retirement in 1983. Following his graduation, O'Connell worked as an attorney for Northwestern Mutual, a Milwaukee insurance company. From 1954 to 1964, O'Connell worked as a Milwaukee County prosecutor, eventually serving as a first assistant district attorney under longtime district attorney William McCauley.
When McCauley died in 1964, O'Connell was named to replace him on the Democratic ticket, edging out the party's preferred candidate, Donald W. Steinmetz. O'Connell was appointed interim district attorney by Governor John W. Reynolds shortly thereafter and was elected to the office in the November general election. O'Connell served as district attorney until 1968, when he sought election to a criminal judgeship on the Milwaukee County Circuit Court.
In the general election, O'Connell faced Dominic Frinzi, a prominent attorney and politician who had represented underworld figure Frank Balistrieri. Asserting his opposition to organized crime, O'Connell handily defeated Frinzi. As a judge, O'Connell was praised as a "superintellect" and as a fair decisionmaker.
Although respected as a jurist, O'Connell was criticized for his own ties to the Milwaukee underworld. In 1988, after his death, the Milwaukee Sentinel asserted that O'Connell's career had been "filled with links to crime figures", citing, among other incidents, a mob figure's recorded remarks that O'Connell was "one of the judges we've been talking to for 10 years". The Sentinel also noted that, three years after defeating Frinzi, O'Connell appointed Frank Balistrieri's son Joseph as a court commissioner.
O'Connell retired from the bench in 1983, citing his growing frustration with his criminal calendar and his desire to write spy fiction. He died four years later, in 1987, of spinal cancer.
The Milwaukee Journal contrasted his moderate judicial philosophy favorably with the conservatism of fellow judge John L. Coffey, who was later appointed to the United States Court of Appeals for the Seventh Circuit.