MEREDITH — Karl Theodore Nilson, known affectionately to friends and family as “Gus,” passed away on Jan. 7, 2026, in Meredith. He was born on Jan. 16, 1954, in Norwood, Massachusetts, to Clara and George T. Nilson.
Karl grew up in both Andover, Massachusetts, and Augusta, Maine, before spending much of his young adult life in and around the Boston area. He graduated from Williams College in 1976, and built a successful career in the technology industry. Karl and his family later settled in East Hampton, Connecticut. In 2021, he and his wife moved to Meredith, to be closer to his mother, Clara, and his brother, Ken. Most recently, Karl retired from Semitech Solutions in Westford, Massachusetts, where he devoted many years of hard work, integrity, and dedication.
Above all else, Karl cherished his family and friends. He is survived by his beloved wife of 40 years, Cheryl; his son, Matt; daughter-in-law, Jocelyn; his brother, Kenneth; sister-in-law, Cathy; and nieces Annika and Maria. He was preceded in death by his mother, Clara, and his father, George.
Karl was a charismatic and deeply personable man with a remarkable ability to form and sustain lifelong friendships. From his college years through his professional life and beyond, he built a wide and meaningful community of friends whom he truly cherished. Family and friendship were the cornerstones of his life.
In his younger years, Karl loved playing basketball, but it was golf that became his lifelong passion. A devoted golfer since the age of 5, he played avidly until the very end, especially enjoying rounds with his son, brother, and close friends. His membership at Birch Hill Golf Club held special meaning, where weekly matches, friendly competition, and camaraderie brought him great joy. A true New England sports fan, Karl rarely missed a game and proudly supported all Boston teams.
His warmth, loyalty, and love for life will be deeply missed and forever remembered.
Arrangements are under the care of Mayhew Funeral Homes and Crematorium. To sign the online book of memories, visit mayhewfuneralhomes.com.
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