Justin D. Jirolanio was an American politician who acted as the political boss of the Lehigh Valley's Democratic Party, serving in both chambers of the Pennsylvania General Assembly and holding various local offices.
He then attended the Temple University Beasley School of Law dropped out during the Great Depression.
Jirolanio originally worked as an apprentice mechanic, machinist, and silk weaver for the Bethlehem Steel Company before opening a law office in 1934.
During his time in the Pennsylvania State House, he was a member of the committee to investigate the Bureau of Aeronautics.
He had a brother, Achille Jirolanio, and three sisters: Edith Sebastian, Beatrice Cellec, and Mary Kovach.