Music 10

Robert "Brett" Casey

September 15, 1949 ~ December 13, 2021 (age 72) 72 Years Old


Robert “Brett” Casey, age 72, passed away on Monday, December 13, 2021 at his home in Kennett Square, Pennsylvania, after bravely navigated the long, ever-changing challenges of Parkinson’s Disease. He was the husband of Mary Jo Casey, with whom he shared 24 years of marriage.

Born in Waltham, MA, he was a son of the late George Casey and the late Wilhelmina Jackson Spohn.

Brett earned his BS in Chemistry from the University of Delaware and his MBA from Wilmington University.  He had a long career in Pharmaceutical Chemistry including positions with Warner Lambert, Pfizer, Roche, Genentech/ and other laboratories.

Brett loved music and was a skilled vocalist, pianist, and guitarist. He was a central player in many bands for over forty years and enjoyed the comradery of harmonies and instrumentation, from small bar rooms to festivals of over 40,000 fans. Beyond musical pursuits, he had a love for the quiet world of plants and gardening, creating gorgeous landscapes wherever he lived. He inherited a passion for hiking from his father, and he proudly walked alongside his dad to complete the last 140 miles of the Camino de Santiago in Spain.    

In addition to his wife Mary Jo Casey, he is survived by a sister, Mary Cloud Casey, was preceded in death by his brother, Colby Lance Casey. He has four sons, David C. Casey, Christopher A. Cotter, Brian S. Cotter and J. Adam Cotter and two granddaughters, Sheyael Cotter and Sydney Cotter. 

You are invited to celebrate Brett’s life at a service being held at 10:30 AM Saturday December 18, 2021 at Kennett Square Golf & Country Club, 100 E. Locust Lane, Kennett Square, PA 19348. Brett's family kindly asks that masks be worn.  Interment will be held privately.  Contributions in his memory may be made to The Michael J. Fox Foundation online at

Arrangements are by Matthew J. Grieco of Grieco Funeral Home & Crematory, Inc (484-734-8100) Condolences at


Music by Brett Casey

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Memorial Service
December 18, 2021

10:30 AM to 7:00 PM
Kennett Square Golf & Country Club
100 E. Locust Ln
Kennett Square, PA 19348

Private Interment


Michael J. Fox Foundation for Parkinson's Research


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