Frank D. Osborn, 86, of Washington, passed away on Saturday, September 26, 2020 at his home. Frank was born August 16, 1934 in Madison Co., AL to the late James D. and Susie V. Madry Osborn. On December 26, 1953, he married Glenna Mitchell in Pekin; she preceded him in death on October 30, 2005. On July 3, 2006, he married Nancy (Mitchell) Frainer in Washington; she survives. Also surviving are four children, Rick, Tim (Tara), and Steve (Kathy) Osborn and Vicki (Robert) Paulsell; siblings, Ron (Diana) Osborn, Mary (Charles) Wales, and Brenda (Walter) Hyland; eight grandchildren; 11 great-grandchildren, several great-great-grandchildren, and his pets, Turbo and Bella. He was also preceded in death by four sisters, one brother, and a granddaughter, Tracy. Frank worked as a research mechanic at Caterpillar for 31 years, retiring in 1982 and helped build several homes in the Beverly Manor area over the years. He was a kind man who enjoyed being in nature whenever he could, whether it was camping or fishing, and was an animal lover. He was a member of New Castle Bible Church in Mackinaw and loved his church family dearly. A funeral service will be held at 11:00am Tuesday, September 29, 2020 at Deiters Funeral Home and Crematory in Washington. Pastors Kevin Sauder and Ralph Bauer will officiate. Visitation will be one hour prior to the service at the funeral home. Interment will be at Glendale Cemetery in Washington. In lieu of flowers, memorial contributions may be made to New Castle Bible Church.