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William Michael Simenz

May 19, 1947 - Feb 04, 2026

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William Michael Simenz, 78, of Sheboygan, Wisconsin, passed away on February 4, 2026. He was born on May 19, 1947, in Sheboygan.

He was preceded in death by his wife, Sheila Rae Simenz.

Bill is survived by his daughter, Shelley (Simenz) Koellmer and son-in-law Jeffrey Koellmer of Seattle, Washington, and their children, Taylor, Caleb, and Josiah Koellmer; and his son, Christopher Simenz and daughter-in-law Stacy Simenz of Milwaukee, Wisconsin, and their children, Sophia and Quentin Simenz.

At Bill’s request, the family will remember him privately.

In lieu of flowers, memorials may be made to Cure Alzheimer’s Fund to support Alzheimer’s disease research.

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Guestbook Entries SIGN GUESTBOOK

Janelle Rios

Your mother and dad were special to me.. When I had my sons at Memorial Hospital your mother was in an administrative position but she came to my room both times to congratulate me. And your father was my boss at Kohler Co. And as so many people have mentioned he was the best boss anyone could ask for. My deepest sympathy to you both and your families for the loss of these two special people.

Linda Fickett

Your Mom and Dad were special people.. Shelley, Chris and family I am thinking of all of you during this profound loss of both of your parents. Sending a lot of love and prayers for peace and comfort.❤️

Steve & Kathy Landgraf

Shelley and family, Chris and family, Our sympathy and hugs go out to you all in the loss of your dad such a short time after your mom! They were both wonderful people and a special part of the Bethany family.

Josiah Koellmer

My grandpa was one in a million. He was truly the most selfless and generous person I have ever known. He has lived for others all of his life and he truly has been a role model for me ever since I was born. I am heart broken and saddened to lose a piece of light in my life like my grandpa. His love for golf was what got me into it, his love for others shows me what love should look like, and his generosity will live on in me forever. Thank you for all you did, thank you for being one of my biggest role models. I love you grandpa.

Taylor Koellmer

Saying goodbye to my Grandpa is really hard. He was one of the most generous people I’ve ever known and showed his love in so many ways. He loved golf, loved his family even more, and always found ways to support me, even from far away. He helped me get through college, supported me financially when I needed it, and never let distance get in the way of making me feel loved. Over the past year I checked in with Grandpa a lot, and his messages were always so kind, and funny, I’m so grateful for everything he did and for the way he showed up for me throughout my life. I’ll miss him more than I can put into words. I’m forever blessed to have you as my Grandpa. Love you Grandpa. -Your oldest Grandchild

Jeff Koellmer

I am so thankful Bill allowed his daughter Shelley to start dating me 40 years ago. It was easy getting to know Bill, we had common interests, our love of sports, the Packers, the Brewers, the Bucks, casual fishing, and music. Bill loved life, loved his people, always provided and was generous with whatever he had. I was warmly welcomed into his family and he cared for me like his own. When Shelley and were in college, I remember the Sunday lunches at his house before we drove back to LaCrosse, he and Shiela fed us, sent us with groceries, and Bill would always slip me a couple hundred dollars, it was generosity I hadn’t experienced before that, and spoke volumes of love and kindness to me, gave me something to aspire to. I loved Bill Simenz, I am thankful God had him as my Father-in-Law, and I hope to see him again in Heaven with the love of his life Shiela Rae.

Shelley Koellmer

I am forever grateful for the gift of my dad’s life. God knew exactly what He was doing when He brought my mom and him together on a blind date. From that moment on, he chose not only to love her, but to love me. I was two years old when they married, yet he stepped fully into the role of father with an open heart and unwavering commitment. He provided for us, supported our dreams, and gave all that he had—selflessly and wholeheartedly. He was incredibly smart, full of wisdom, and always willing to share what he knew. Through his words and, more importantly, through his example, he taught me responsibility, integrity, and how to make wise choices in life. He deeply loved his family and found joy in music, golf, card club and in my mom. He was a super funny dancer!. In the weeks after my mom passed, we shared tender and loving moments that I will carry with me forever—quiet reminders of the gentle side of his heart and enduring love of Sheila. I thank God for the life he provided for me, for the sacrifices he made, and for the love he gave. His legacy lives on in the values he instilled, the love he showed, and the commitment to family. I will always be thankful, and I will always carry him in my heart. I love you Daddy! Your Buggerinko-Cheekus-Little Girl Shelley Rae

Sandy Brickner

Bill was my Manager at Kohler- Customer Service for many years. He was the best boss ever! His Team worked hard for him because he truly cared about each and everyone of us. He was always there for us for any work matters and always listened if we needed guidance in personal situations. My deepest sympathies to the family.

Mitzi Stoltzman

Deepest sympathy to the family of Bill Simenz. I remember Bill from Ss Cyril & Methodius grade school, South High, and also working at Kohler Company. What a wonderful person, who will be sadly missed. RIP Simba!

Chris Wiest

I am so sorry for your loss. You had the best parents! They loved each other SO much! They loved their family tremendously. I feel so blessed to have spent time with Sheila and Bill. I will miss them both. God bless you and your families. Keep those wonderful memories close.

Monica Butzen

I am SO sorry to hear of Bill's passing so shortly after Sheila's. I worked with Bill for about 18 years, at Kohler, and he was definitely ONE of my favorite coworkers and supervisor during that time. My prayers are with all of you at this time.

Dave schmitt

My sympathies once again to the family. Shelly, I am sorry that Your Dad had decided to wait after I had offered to visit with him . This is a challenging time for everyone, we will continue to pray for your family.

Suzann Heinze

I am so very sorry to hear of Bill’s passing. I was lucky enough to work with Bill at Kohler Co. I was a new manager there and he was my mentor. He taught me so much and was a great support to me. May your memories of him comfort you during this time.

Judy Zastrow

Oh Shelley and Christopher..I’m so sorry to hear the loss of both your parents especially so close together..I have such fond memories of them and the family…prayers for comfort and peace..Love Jim and Judy

Mary Gereau

I am so sorry for your loss. Bill was my boss for several years at Kohler and will always be remembered for his singing down the aisled "aint it funny how Time Slips away" and standing up for us when others wouldn't . One of my best memories is when he took my personnel folder that was full of "paperwork" from a prior manager - he looked at me - took them out and put them in the trash. He was a force and will be greatly missed.

Larry and Sue Lorier

We are soooo sorry…I (Sue) worked with Bill and always loved him…he was always so sweet, giving and honest…one of a kind!!! May your memories and faith carry you through💔

Tyler Schaefer – Elkhart Lake

My sincere & heartfelt sympathies to the Simenz family. Losing both parents in 5 weeks is so very difficult. No matter how old we are, our parents "anchor" us in this world - and life is never the same after they are gone. God blessed you with the very best parents. Hold them in your heart forever & look forward to those joyous reunions in heaven someday. Prayers that the Lord will hold and comfort each of you in this sad and difficult time.