Mary Lou Petronsky Obituary

Mary Lou Petronsky attended Chartiers Valley High School in Bridgeville, PA. View the obituary, post a memory, or share a photo about Mary Lou Petronsky.

Graduation Year	Class of 1966
Date of Passing	May 29, 2025
About	Mary Lou Petronsky, 77, of Bridgeville, PA passed away peacefully after a long-term battle with Parkinson’s disease on May 29, 2025. Born on October 20, 1947, she is the daughter of the late Louis and Catherine Petronsky. Loving sister to Louis (Bonnie) Petronsky; Beloved aunt to Matthew and Keith Petronsky; She is also survived by many cousins. Mary Lou dedicated 33 years to the Allegheny County Controller’s Office and served for many years as a Chartiers Valley School Board Director, always committed to her community and public service. She loved traveling, photography, playing bingo, and visiting casinos. Above all, her generosity and love for her family members was most important to her, showing her support for them throughout the years. She will be missed dearly by all who knew and loved her.