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Denis L. Grogan

October 2, 1940 — February 2, 2025

Grafton

Denis L. Grogan

Denis Lee Grogan, 84, of Grafton, WI, passed away peacefully at his home on Sunday, February 2, 2025. 

Denis was born in Milwaukee, WI on October 2, 1940, the son of Arthur and Gertrude (Wollert) Grogan. He served in the National Guard in Fort Lewis Washington at the time of the Berlin Crisis in 1961.

On March 10, 1962, Denis was united in marriage to Agnes Ingrid (Ruf) Grogan from Trier, Germany at Walther Memorial Lutheran Church in Milwaukee. They met at Northwestern Mutual Life Insurance Company in Milwaukee, where Denis worked in the Data Processing Department.

For nearly 30 years, Denis was employed by The F. Dohmen Co., first at their South 13th St. location in Milwaukee, and later in Germantown. He retired in 1997 as the corporate Chief Information Officer. Denis took great pride in his work, motivated by the challenges it presented and the opportunity to manage and mentor others. His leadership and dedication were cornerstones of his career, and he found great fulfillment in being a part of the success of the company. 

Denis was an avid outdoorsman who greatly enjoyed hunting and fishing, sharing this passion with his son, Jeff, and his lifelong hunting buddies. He loved spending time at his cabin near Summit Lake each fall, as well as making annual fishing trips to Canada. In later years, he cherished passing these traditions down to his grandsons, Robert and Richard. The beauty of the northwoods and its wildlife, especially in the fall, was something Denis deeply revered. 

Surviving are his wife Agnes; three children, Jeffrey (Heidi) of Germantown, WI, Diana (Helmut) Schomers of Salm, Germany, and Heidi (Geoff) Maddocks of Ladera Ranch, CA; eight grandchildren and three great-grandchildren.

Denis was preceded in death by his parents and his brother, Ronald Arthur Grogan.

Services will be held at St. Paul Lutheran Church, 701 Washington St, Grafton, WI on Wednesday, April 16. Visitation will begin at 10 a.m. with the service commencing at 11:30 a.m. Burial will immediately follow at the St. Paul Lutheran Church Cemetery. Afterwards, a celebration of life will be held at the American Legion Rose-Harms Post 355 in Grafton, where we will have the opportunity to give a final „prost“ to Denis along with a light meal. 

In lieu of flowers, memorials to St. Paul’s Lutheran Church in Grafton are preferred.

To order memorial trees or send flowers to the family in memory of Denis L. Grogan, please visit our flower store.

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Wednesday, April 16, 2025

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