Thomas S.J. Mallon, 89, a former Philadelphia lawyer, died of Parkinson's disease Sunday at Brittany Pointe Estates, a retirement community in Upper Gwynedd.

Born in the Logan section of the city, he graduated from St. Joseph's Preparatory School in 1938, and earned his bachelor's degree from what is now St. Joseph's University in 1942 and his law degree from the University of Pennsylvania in 1949.

During World War II, he was a pilot with the Army Air Corps in India, flying B-24s on bombing runs over China and Burma. He earned a Distinguished Flying Cross.

A daughter, Elizabeth Hunter, said that in the 1950s Mr. Mallon set up his own law practice at Ninth Street and Erie Avenue in North Philadelphia, where he also had a real estate office.

A spokesman for the Center City law firm of Schubert, Bellwoar, Cahill & Quinn said that when Mr. Mallon joined the firm as a named partner in the late 1960s it became Schubert, Mallon, Walheim & Decindis.

Mr. Mallon retired in 1986.

Besides his daughter, Mr. Mallon is survived by sons Richard Mallon-Day, Thomas, Paul and Christopher, daughters Anita Antrim and Theresa, a brother, 13 grandchildren, and a great-grandson. His wife of 50 years, Elizabeth, died in 2000.

A viewing was set for 9 a.m. Monday at Corpus Christi Church, Sumneytown Pike near Route 363 in Upper Gwynedd, followed by a 10 a.m. Funeral Mass there, with burial in Holy Sepulchre Cemetery, Cheltenham.