Dennis R. Onnen, 67, of Prairie Village, KS, passed away Thursday, June 24, 2021.  Dennis was born on January 10, 1954, to Ivan Leo and Marilyn Lucille Onnen of Saint Paul, MN, and graduated from Benson High School in Omaha, NE.  Dennis then earned degrees in journalism and law from the University of Nebraska.  He began his 40-year career as an IRS tax attorney in Houston, transferring to Kansas City after four years.  There, Dennis met his future wife, Kathryn Lee Jones. They married in 1989, settled into Prairie Village, and were blessed with two children, James and Becki.  Dennis was an active member of the United Methodist Church of the Resurrection.  He had many interests, including Royals baseball, Nebraska football, Boy Scouts, cycling, movies, trivia, playing bridge, feeding treats to neighborhood dogs, and traveling.  Most of all, he enjoyed spending time with friends and family.  Dennis was preceded in death by his parents.  Dennis is survived by Kathy, his beloved wife of 32 years; his son, James, Belleview, WA; his daughter, Becki, Seattle, WA; and his sister, Janet Onnen, and her family, Morristown, NJ.  Services will be held at the Wesley Covenant Chapel of COR (13720 Roe Ave, Leawood, KS 66224) on Friday, July 9, 2021.  Visitation begins at 9:30 a.m., followed by the memorial service at 10:30 a.m., with the Rev. Steve Langhofer officiating. For those unable to attend in person, the service will be livestreamed @ cor.org/memorialsonline. In lieu of flowers, the family suggests memorial contributions in Dennis's name to the United Methodist Church of the Resurrection — Partner Schools Ministry or Saint Luke's Hospice House.