After graduating from St. Peter the Apostle High School in New Brunswick in 1925, he entered Fordham University.
[2] He clerked with New Jersey Supreme Court Justice Peter F. Daly and became a trial lawyer in New Brunswick.
[3] Lynch continued to serve in the Senate while suffering from cancer in the last four years of his life.
He died at Whitestone Hospital in Queens, New York City, on March 3, 1978, a week before his 70th birthday.
[1] The John A. Lynch Sr. Memorial Bridge, spanning the Raritan River on Route 18, is named in his honor.