Margaret K. McMahon Obituary

The passing of Margaret K. McMahon (Southampton, New York), born in Englewood, New Jersey leaves a void in the hearts of many, as we bid farewell to a loving soul who departed on May 14, 2026 at the age of 77. You can send your sympathy in the guestbook provided and share it with the family.

She was predeceased by: her parents, Francis Kennedy and Mina Kennedy; her brothers, Kevin and Brian Kennedy; her sister-in-law Patricia Alvord; and her friend John Barnhill.

She is survived by: her significant other Richard H. McMahon Jr.; her sons, Kevin and Richard; her grandson Kevin J. McMahon of Shelbyville; her great grandchildren, Aria and Andrew; her grandson Richard H. McMahon III (Elisabeth) of Southampton; her great grandchildren, Eleanor and Brock; her sister Patricia; her siblings-in-law, Michael Tuths of East Hampton, Marie Kennedy of Harleysville, Marje Helfet (Tony) of Tiburon, California and Andrew McMahon of Petaluma, California; and her close friend Diane Donelan (Jim) of Aquebogue. She is also survived by friends, and even her nurses.

In lieu of flowers, donations can be made to Memorial Sloan Kettering Pediatric Cancer Center (https://secure2.convio.net) in honor of her grandson.