Robert Dean Duff Sr, 72, of Topeka passed away on February 19th, 2023. Robert was born on January 28th, 1951 to Orlie Robert Duff Jr. & Geneva (Germanprez) DeKeyser in Topeka, KS. He attended Highland Park High School, prior to joining the United States Marine Corps. As a 1st Infantryman, Robert was a veteran of the Vietnam War. Robert was the Captain of the Topeka Fire Department. He retired in 2003. Robert was highly involved in the Topeka Military Community. He was a member of the V.F.W and highly committed to Post 400 of the American Legion, serving under a variety of roles, including Commander. Surviving Robert are three children, Shannon Bogart of Topeka, KS; Meggin Montalvo (Raphael) of Tampa, Florida; & Robert Duff Jr. (Arianna) of Topeka, KS. He also leaves behinds two grandchildren, McKenna & Iain Duff of Topeka. Visitation will be held on Thursday, February 23rd, from 5pm-6:30pm at Davidson Funeral Home, 1035 N. Kansas Avenue. A funeral service will be held on Friday, February 24th, at 10:00am at Davidson Funeral Home. Memorial Contributions can be made to post #400 of the American Legion. Roberts funeral service will be live streamed. Please click here.