John Sheridan (New Jersey government official)

Sheridan's four sons, the oldest of whom had followed his father's political footsteps and served as chief counsel to the New Jersey Republican Party, vigorously disputed the finding. Not only had their parents not shown any sign that they might do something like this, there were anomalies in the evidence, as well as deficiencies in the investigation. After a court challenge they brought, in 2017 the state's chief medical examiner overruled the prosecutor and said that while John Sheridan's proximate cause of death was the combined effect of the stab wounds he suffered and smoke inhalation, it could not be determined if he had stabbed himself or not. In 2022 the state reopened the investigation in the wake of a similar killing that also involved some people with political connections.

In May 2017 Cooper named one of its facilities after its late head. Sheridan Pavilion is a 160,000-square-foot (15,000 m) five-story ambulatory care facility on the hospital's campus in downtown Camden that treats 100,000 patients a year. Governor Christie, former governors Kean, Florio, Corzine and James McGreevey, along with former acting governor and state senate president Donald DiFrancesco, attended the dedication ceremony.

After Governor Christie appointed a new state medical examiner, Andrew Falzon, in 2016, 200 politically prominent New Jerseyans, including three former governors and two former attorneys general, wrote the new medical examiner an open letter asking that John Sheridan's death certificate be amended as his family wanted. Later in 2016 Christie refused to renew Soriano's appointment, reportedly claiming he had "lost confidence" in the prosecutor. In 2017 Falzon officially changed John Sheridan's death certificate to say that the manner of death was undetermined.

In March 2015, Geoffrey Soriano, the county prosecutor, ruled that their death was a murder-suicide in which John, possibly motivated by despair over an upcoming negative state report on the hospital's cardiac unit, had killed Joyce, then himself, and set the fire to conceal evidence. Mark Sheridan and his brothers strongly disputed that conclusion, and hired Michael Baden to do a second autopsy. He concluded that it was highly likely that a third person killed the two, especially given that the knife which had inflicted the fatal wounds could not be found.

Shortly before dawn on September 28, 2014, local firefighters responded to a report of flames at the Sheridans' house on Meadow Run Drive in the Skillman section of Montgomery Township, in southwestern Somerset County. Smoke was coming from one area of the second floor that turned out to be the master bedroom. After entering through the unlocked front door, the firefighters went upstairs and easily put out the fire, fueled by gasoline that had been poured on the floor as an accelerant. Also on the floor, they found the bodies of John and Joyce, lying face up. John was pronounced dead at the scene, as was Joyce after her body was taken to University Medical Center of Princeton at Plainsboro.

Sheridan did not leave politics completely during his time at Cooper. Shortly after taking the job, he helped his brother Peter G. Sheridan get nominated, and then confirmed, to a judgeship on New Jersey's federal district court. After the 2009 election of another Republican, Chris Christie, to the governorship, he served again on the transition team.

In 2005 he left Riker Danzig, where he had become a senior partner and the firm's co-manager, to take over as president and chief executive officer of Cooper University Hospital in Camden. He and the chairman of the hospital's board, George Norcross, a leading Democratic figure in South Jersey, worked together to use their political connections and knowledge to secure favorable rulings from regulators and public financing in support of Cooper's expansion plans. Several years later, this led to the merger with the MD Anderson Cancer Center and the opening of the only four-year medical school in South Jersey, Cooper Medical School of Rowan University.

After leaving that position he returned to private law practice. He was not done with politics; in 1993, when Republicans retook the governor's mansion and state legislature, he served on Christine Todd Whitman's transition team. For 25 years he served on the Carrier Clinic's board.

In 1982, Congress had mandated that Conrail, the government-created corporation that took over the freight operations of many bankrupt private railways in the Northeast and Midwest, stop providing passenger service, which it had not done well in any event. The commuter rail lines that Conrail had operated in New Jersey, mostly in the New York City metropolitan area but one crossing South Jersey from Atlantic City to Philadelphia, were thus transferred to New Jersey Transit, created three years earlier to take over bus services around the state that private companies could no longer provide. Sheridan completed this takeover by the end of Kean's first term in 1985; he served on NJ Transit's board for several years afterwards.

Sheridan had also served as counsel to the New Jersey Turnpike Authority. This experience led to his appointment as the state's Transportation Commissioner when Republicans returned to control of the state's executive branch with the 1981 election of Thomas Kean as governor. James Weinstein, who worked for Sheridan in that position and later became Transportation Commissioner himself, recalls that Sheridan got his department's goal accomplished through "patient, lawyerly arguments based on public policy and shared interests."

After law school he served in the Army for two years from 1968 to 1970. Following his discharge, he went to work in the administration of Republican New Jersey Governor William T. Cahill as a deputy attorney general and, later, assistant counsel to Cahill. Later in the decade, after Cahill's two terms had ended and Democrat Brendan Byrne was elected governor, he would serve as counsel to the Republicans, then the minority party, in the State Senate. Outside of government, he ran the Trenton office of the Morristown law firm Riker, Danzig, Scherer, Hyland & Perretti, lobbying state government on behalf of the firm's clients.

He met Joyce Mitchko, of Lincoln Park, New Jersey, three years his junior, while he was tending bar in West Orange to pay for a law school. The two married in 1967. Over the next decade they would have four children, all sons: twins Mark and Matthew, Daniel and Timothy. Joyce taught social studies in the Cedar Grove and South Brunswick public schools.

John Sheridan (September 7, 1942 – September 28, 2014) was a lawyer from the U.S. state of New Jersey. During the 1970s and 1980s he served in state government under Republican governors William T. Cahill and Thomas Kean. As the state's Transportation Commissioner during the latter governor's administration, he oversaw the transfer of commuter rail service in the state from Conrail to New Jersey Transit. At the time of his death, he was president and chief executive officer of Cooper Health System, which has since named one of its buildings after him.

John Patrick Sheridan Jr. was born September 7, 1942, in Cambridge, Massachusetts, to Rita and John P. Sheridan. The family moved to Northern New Jersey in childhood, and John Jr. eventually graduated from Seton Hall Preparatory School, then in South Orange. He graduated from St. Peter's College (now St. Peter's University) in Jersey City in 1964 and Rutgers Law School in 1967.