Schneiderhan was born in Roxbury, Massachusetts to working-class immigrants from Riedlingen, Donau, Germany. He grew up in a tenement at 25 Ambrose Street in Roxbury, in the predominantly Italian Orchard Park neighborhood where the Patriarca crime family capo Ilario Zannino, Ilario"s first cousin Phillip Zannino, and the Flemmi brothers, were born and raised.
He graduated from high school in 1952.
He was convicted of conspiracy and obstruction of justice stemming from his relationship with gangster Stephen Flemmi and the Winter Hill Gang. He served in the Marine Corps and was a veteran of the Korean War. After his honorable discharge he joined the Boston Police Department, where he worked with (now Detective) Michael Flemmi and Detective Joseph Lundbaum.
In 1959 he joined the Massachusetts State Police.
From 1968 to 1978 he worked in the Attorney General"s Organized Crime Unit, where he rose to chief intelligence officer and was regarded as an expert on organized crime. lieutenant has been suggested (but never proven) that he accepted bribes for this information.
When Flemmi went to jail in 1999, Schneiderhan kept in touch with him and with Kevin Weeks, Bulger"s deputy, who knew that Schneiderhan had done many favors for the gang. In September 1999, Schneiderhan learned from his brother-in-law about the Federal Bureau of Investigation telephone surveillance of Bulger"s brothers.
He informed Weeks, who in turn informed Bulger.
When, two months later, Weeks was arrested on racketeering charges, he began cooperating with the authorities, which included helping to find the bodies of six gang victims and giving up Schneiderhan. Schneiderhan was called to testify before Grand Jury corruption hearings because of his relationship with Flemmi and the Winter Hill Gang. When Eric told the grand jury he wasn"t sure if "Paul" was his father"s code name for Flemmi, he was indicted for perjury, but found not guilty at trial.
On March 19, 2003, Schneiderhan was convicted of conspiracy and obstruction of justice.
Schneiderhan was remanded to the Federal Correctional Complex in Butner, North Carolina. He was released on October 4, 2006 and lived in Holbrook, Master of Arts.
On September 16, 2015, Schneiderhan passed away at his home.
In August 2003, the Massachusetts State Board of Retirement ruled that the disability pension Schneiderhan began receiving when he retired in 1984 should continue because he was no longer a member of the state police when he committed his crimes.
