Keith N. Mergenthal, 84, of Brookville died on Wednesday, July 29, 2020, at Bethesda North Hospital in Dayton.Keith was born at home in Franklin County on April 16, 1936 to Lester and Mildred Meyer Mergenthal. On November 9, 1957, he married Eileen Schuler and they enjoyed over 51 years together before she died on June 3, 2009. Keith served his country in the Army Reserves, worked in construction and owned and operated the Bath Grain Elevator for 23 years. Keith was a member of the Bath Conservation Club and he loved going to races, tractor pulls and attending the Antique Tractor Show.Keith is survived by three sons: Jerry Mergenthal, Gary (Connie) Mergenthal, and Dave Mergenthal, all of Brookville; three grandchildren: Keith (Heather) Mergenthal, Kristen (Sean) Berns, and Kaitlyn (Dylan) Miller; five great-grandchildren; Hailey, Hunter, Hayden, Karlee and Brennan; one sister: Alice Seals of Liberty; and several nieces and nephews. Keith was preceded in death by his parents; his wife; and four siblings: Carol Schuler, Pam Getz, Kenny Mergenthal, and Ellen Simpson.Funeral services will be conducted at 1:00 p.m. on Tuesday, August 4th, at Cook Rosenberger Funeral Home ~ 929 Main Street Brookville with Pastor Ladonna Webb officiating. Burial will follow in Maple Grove Cemetery. Friends may visit at the funeral home from 11:00 a.m. until time of service. Memorial Contributions may be made to Franklin County EMS.Due to the COVID-19 precautions and state mandates, all attending will be asked to follow proper social distancing protocol, including wearing a mask. If you are not feeling well, or if you have compromised immune system, you are encouraged to stay home.For more information or to send condolences, memories, or sign the online guest book, go to www.cookrosenberger.com. The Cook Rosenberger Funeral Home Staff is honored to serve Keith’s family.