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Peter Grefsheim
1946 - 2026
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Peter Grefsheim Obituary
June 8, 1946 - February 26, 2026
CAMBRIDGE - Peter D. Grefsheim age 79, passed away on February 26, 2026, after suffering a stroke. He was born on June 8, 1946, in Madison, Wisc., son of Norman and Helen (Nelson) Grefsheim.
Peter, who graduated from Madison East high school, received a two-year programming degree from Madison College and went on to earn a bachelors degree in computer science.
Peter enjoyed golf, ballroom dancing, and hiking. He was a dedicated Wisconsin sports fan. He loved UW hockey and basketball and cheered on the Green Bay Packers. Back when Badger Bob Johnson was Coach, Peter and his brother Jon would make long road trips to watch the Badger men's hockey championships in 1973, 1977, and 1981. Two of these championship games were played at Boston Garden & at Clarkson in Potsdam, N.Y. Peter had season tickets for UW men's basketball games which he enthusiastically enjoyed.
Peter is survived by his daughter, Kim Su (Chen); granddaughters, Tay & Kai; grandson, Jett; great-granddaughter, Rosie; great-grandson, Theo; brother, Jon Grefsheim; niece, Jamie, & her children, Angel, Maria, & Johnny; Howard's son, Anthony; special friend, Christine Sannes, & sweet dog, Ahna Bella.
Peter is preceded in death by his parents, Norman & Helen Grefsheim, & nephew, Howard G. Grefsheim.
Visitation is at Living Water Church, 3075 Prospect Dr. Sun Prairie from 9:30 to 11 a.m. on Wednesday, March 4, 2026, with a memorial service and lunch to follow.
A special thank you to the UW crisis team and Dr. Dominic Siler.
To view full details and leave a memory, please visit: www.ryanfuneralservice.com.
Ryan Funeral Home & Cremation Services
2418 N Sherman Ave
608-249-8257
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