Leonard Harold Kellner, De Pere, passed away at home on Friday, May 29, 2026.

After graduating from Green Bay East High School, Len served his country through a tour of Vietnam 1967 – 1969 as part of the U.S. Army. Upon his return he worked at Millprint in the 1970’s and early 80’s. Len later discovered his passion for golf, leading him to work at the Golf Shack. His love for the sport and entrepreneur courage led him to open his own store, Tee to Green, which he operated for two decades, also briefly running a driving range. A golf tournament was his tv viewing of choice.

Beyond his professional life, Len was a lover of automobiles, he bought, fixed, and restored to varying degrees no fewer than five Plymouth Barracudas before he got busy with the store.

Len was a quiet man who often kept to himself, but his kindness shone through around his customers and the friends he made on the golf course. Those who knew him well remember his quiet strength, his passion for his work, and love for his family.

Len is survived by his loving wife Mary Ann, son Jason (Lee), and grandsons Jared and Jesse, stepson Steve Giese and grandsons Ian and Ryan, and there Mother Lisa. His brother Donald (Vicki) Althaus. His nieces Gwen, nephews Rick, Rob, Andy, and CJ, as well as other nieces and nephews.

He was preceded in death by his mother Ethel, his father John, and stepfather Roger. His siblings; Tom, David, and Gerald Suess, his sisters; Mary Ann De Broux, and Kathleen Kellner Cross, as well as two nephews Mic and Brian.

Len would like to thank all his golfing friends for the fun and laughter on the golf course and to their visits at Tee to Green.

Lens family extends a special thank you to Peggy and Bill Wright for all the help you both have given to Len and Mary Ann. Lens family extends a special thank you to Dr. Gast, and Unity Hospice.

In accordance with his wishes, Len will be cremated, with no services. His final resting place will be at Mt. Calvary Cemetery, De Pere.

Ryan Funeral Home, De Pere is assisting the family.