Watertown
John K. Kopplin
1962 — 2025
John K. Kopplin, 62 of Watertown, passed away on Thursday, March 13, 2025 at his home. John was born on March 25, 1962, in Watertown, the son of Emil and Genevieve (Mand) Kopplin. He married the love of his life Wendy Klockow on May 14, 1983, in Johnson Creek, and the couple enjoyed 37 years of marriage before her passing in 2020. In his free time, John enjoyed spending time with his grandkids, playing poker and other card games with his friends, and doing puzzles. John liked being outside and spending time on the golf course. He was an avid sports fan, and loved to watch any Wisconsin team play. Above all else, John enjoyed spending time with his family, in-laws, and friends and will be...