John Chisholm Kohlhaas, 87, passed away peacefully and surrounded by family at Benedictine Health Center on Thursday, April 20th, 2023. He was born on April 17th, 1936, to Margaret and Clayton Kohlhaas in Duluth, MN. He grew up in Duluth, graduating from East High School in 1954 and UMD in 1958. He married his high school sweetheart, Marcia Wallace, in 1958 and together they raised four sons.