In 1956, he began his law practice with Raymond J. Broderick. In 1961, he was made a partner with the law firm Broderick, Schubert & FitzPatrick.
In 1972, the firm became Liebert, Short, FitzPatrick & Lavin. In 1988, with his colleague Marcy Tanker, he formed the firm of FitzPatrick & Tanker.
He worked there until 1997, when he was appointed chief staff attorney for the Pennsylvania Court of Judicial Discipline, then in its infancy. He never retired.
"He didn't use a computer," said his daughter Patricia F. Donlon. "All of the casework he quoted was in his head."
Mr. FitzPatrick was a member of Merion Golf Club, a supporter of Villanova Wildcats athletics, and a founding member of the Caesar Rodney Society, which brought together movers and shakers for conversation and good cheer. He read avidly and collected books.
"He was a connoisseur of fine wine and cheese, and a secret poet who wrote engaging limericks in his spare time," his family said in a tribute.
Surviving, besides his wife of 62 years and their daughter, are sons Henry Burk III, Brian I., Brendan A., Norman G., Cornelius R.; daughters Siobhan M., Catherine M., Kiera F. Werner, and Colleen F. Markey; a brother; a sister; and 18 grandchildren.
Friends may call starting at 11:30 a.m. Saturday, Dec. 21, at St. John Neumann Roman Catholic Church, 380 Highland Lane, Bryn Mawr. Mass will be said at 12:30 p.m. Burial will be in Calvary Cemetery.
Donations may be sent to Mercy Vocational High School, 2900 W. Hunting Park Ave., Philadelphia 19129.