Dennis M. Coll

Dennis Maurice Coll, 77, passed away peacefully on March 23, 2025, in his hometown of Philadelphia, PA. Born on December 1, 1947, to Joseph and Marguerite Coll, Dennis developed a profound love for learning and history.

A graduate of Germantown High School (Class of 1965), Dennis earned his Bachelor's Degree from La Salle University. He began his career at General Electric's Missile Space Division in King of Prussia before becoming the owner and CEO of Donnegan Systems in Northboro, Massachusetts, where he built a legacy.

Dennis was known for his vibrant interests in music, running, equestrian pursuits, Revolutionary War history, and Italian art and culture.

He is lovingly survived by his daughter, Meegan Coll of Philadelphia, and his sister, Marguerite Coll Young of Ambler. Dennis is also cherished and remembered by his dear friend, Serena Grattarola, many lifetime friends, and the compassionate caregivers who supported him with such dedication.

Dennis was preceded in death by his parents and brothers, Joseph and Frank Coll.

A service to honor Dennis will be on Saturday, April 26, at Our Mother of Consolation Parish Church in Philadelphia. Visitation will be from 9:00-10:00 am, with Mass to follow. The burial will be private.  In lieu of flowers, please donate to:  https://www.2ndwind.org/donate/