John Leo ‘Jack” Diefendorf Jr.
John Leo ‘Jack’ Diefendorf Jr., 79, passed away peacefully on November 7, 2025, at Lowell General Hospital after a period of declining health. Born in Boston on September 4, 1946, he was the son of the late John L. Diefendorf and the late Loraine (Everhard) Diefendorf. Jack grew up in Lowell, where he attended local
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