John Baker Jennings
John Baker Jennings, 82, passed away peacefully at home in Chestnut Hill, MA, from complications of Parkinson’s disease on September 3, 2026. John was born on November 26, 1943, to Ruth Baker Jennings and Milton Jennings in New York City. He studied electrical engineering at Yale University and earned a Ph.D. in operations research from M.I.T. After working at several companies, he began a long career at AT&T in product management. John met his wife, Rosemary Ralph, in 1975 in New York City. They married on Lake Champlain in 1977 and raised their three daughters in New York City and Rockland County, NY.He is survived by his wife, Rosemary; his daughters, Aubrey Goodman and her husband, Dan; Tiane Jennings and her husband, Wes Sutton; and Gillian Donovan and her husband, Justin; his eight grandchildren; and his sister, Ellen Giusti. He was predeceased by his twin brother, Richard Jennings. In lieu of flowers, donations may be made in John’s memory to the Michael J. Fox Foundation for Parkinson’s Research.