Michael Brett Keesler, Sr., 71, passed away on Thursday, August 1, 2024 at Parkview Regional Medical Center. Michael was born December 4, 1952 in Fort Wayne, Indiana, son of the late Merl E. and Marcella (Wieirs) Keesler. He was a graduate of North Side High School and worked as a lieutenant for the Allen County Sheriff's Department for 33 years. He also worked as a realtor for 20 years at Century 21. Michael was a member of St. Matthew's Lutheran Church. Surviving are his wife, Margaret Keesler; Michael B. Keesler, Jr.; daughter, Holly Wagner; seven grandchildren; and two great-grandchildren. A memorial service for Michael will be held Thursday, August 15, 2024 at 4:00 pm with visitation and sharing afterwards until 6:00 pm at St. Matthew's Lutheran Church, 2305 Goshen Road, Fort Wayne, Indiana 46808. Contributions in Michael's memory may be made to Lions Club International or Fraternal Order of Police - PAL Program. To leave condolences, visit www.advantagemungovan.com.